21537213984

Names of 21537213984

• Cardinal: 21537213984 can be written as Twenty-one billion, five hundred thirty-seven million, two hundred thirteen thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 2.1537213984 × 10¹⁰

Factors of 21537213984

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 105

Divisors of 21537213984

• Number of divisors d(n): 864
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 13 16 18 22 23 24 26 27 32 33 36 39 44 46 48 52 53 54 66 69 72 78 88 92 96 99 104 106 108 117 121 132 138 143 144 156 159 169 176 184 198 207 208 212 216 234 242 253 264 276 286 288 297 299 312 318 338 351 352 363 368 396 414 416 424 429 432 468 477 484 506 507 528 552 572 583 594 598 621 624 636 676 689 702 726 736 759 792 828 848 858 864 897 936 954 968 1012 1014 1056 1089 1104 1144 1166 1188 1196 1219 1242 1248 1272 1287 1352 1378 1404 1431 1452 1518 1521 1573 1584 1656 1696 1716 1749 1794 1859 1872 1908 1936 2024 2028 2067 2178 2208 2277 2288 2332 2376 2392 2438 2484 2544 2574 2691 2704 2756 2783 2808 2862 2904 3036 3042 3146 3168 3267 3289 3312 3432 3498 3588 3657 3718 3744 3816 3861 3872 3887 4048 4056 4134 4356 4554 4563 4576 4664 4719 4752 4784 4876 4968 5088 5148 5247 5382 5408 5512 5566 5577 5616 5724 5808 6072 6084 6201 6292 6413 6534 6578 6624 6831 6864 6996 7176 7314 7436 7579 7632 7722 7774 8073 8096 8112 8268 8349 8712 8957 9108 9126 9328 9438 9504 9568 9752 9867 9936 10296 10494 10764 10971 11024 11132 11154 11232 11448 11616 11661 12144 12168 12402 12584 12826 13068 13156 13409 13662 13728 13992 14157 14352 14628 14872 15158 15264 15444 15548 15741 15847 16146 16224 16536 16698 16731 17424 17914 18216 18252 18603 18656 18876 19239 19504 19734 19872 20449 20592 20988 21528 21942 22048 22264 22308 22737 22896 23322 24288 24336 24804 25047 25168 25652 26136 26312 26818 26871 27324 27984 28314 28704 29256 29601 29744 30316 30888 31096 31482 31694 32292 32913 33072 33396 33462 34848 34983 35828 36179 36432 36504 37206 37752 38478 39008 39468 40227 40898 41184 41976 42471 42757 43056 43884 44528 44616 45474 45792 46644 47541 48672 49608 50094 50193 50336 51304 52272 52624 53636 53742 54648 55968 56628 57717 58512 59202 59488 60632 61347 61776 62192 62964 63388 64584 65826 66144 66792 66924 68211 69966 71656 72358 72864 73008 74412 75141 75504 76956 78936 80454 80613 81796 83369 83952 84942 85514 86112 87768 88803 89056 89232 90948 93288 95082 98527 99216 100188 100386 102608 104544 104949 105248 107272 107484 108537 109296 113256 115434 117024 118404 120681 121264 122694 123552 124384 125928 126776 128271 129168 131652 133584 133848 136422 139932 142623 143312 144716 146016 147499 148824 150282 151008 153912 157872 160908 161226 163592 166738 167904 169884 171028 173151 174317 175536 177606 178464 181896 184041 186576 190164 197054 198432 200376 200772 204633 205216 206011 209898 214544 214968 217074 218592 226512 230868 236808 241362 241839 242528 245388 250107 251856 253552 256542 258336 263304 267168 267696 272844 279864 285246 286624 289432 294998 295581 297648 300564 307824 315744 321816 322452 325611 327184 333476 339768 342056 346302 348634 351072 355212 362043 363792 368082 373152 380328 384813 394108 400752 401544 409266 412022 419796 427869 429088 429936 434148 442497 453024 461736 470327 473616 482724 483678 490776 500214 503712 507104 513084 522951 526608 535392 545688 552123 559728 570492 578864 589996 591162 595296 601128 615648 618033 643632 644904 651222 654368 666952 679536 684112 692604 697268 710424 724086 727584 736164 750321 760656 769626 788216 801504 803088 818532 824044 839592 855738 859872 868296 884994 886743 923472 940654 947232 965448 967356 976833 981552 1000428 1026168 1045902 1053216 1083797 1091376 1104246 1119456 1140984 1154439 1157728 1179992 1182324 1202256 1236066 1287264 1289808 1302444 1327491 1333904 1359072 1368224 1385208 1394536 1410981 1420848 1448172 1472328 1500642 1521312 1539252 1568853 1576432 1606176 1637064 1648088 1679184 1711476 1736592 1769988 1773486 1846944 1854099 1881308 1917487 1930896 1934712 1953666 1963104 2000856 2052336 2091804 2167594 2182752 2208492 2250963 2266121 2281968 2308878 2359984 2364648 2404512 2472132 2579616 2604888 2654982 2660229 2667808 2770416 2789072 2821962 2841696 2896344 2944656 3001284 3078504 3137706 3152864 3251391 3274128 3296176 3358368 3422952 3473184 3539976 3546972 3708198 3762616 3834974 3861792 3869424 3907332 3982473 4001712 4104672 4183608 4232943 4335188 4416984 4501926 4532242 4563936 4617756 4706559 4719968 4729296 4944264 5209776 5309964 5320458 5540832 5562297 5578144 5643924 5752461 5792688 5889312 6002568 6157008 6275412 6502782 6548256 6592352 6798363 6845904 7079952 7093944 7416396 7525232 7669948 7738848 7814664 7964946 8003424 8367216 8465886 8670376 8833968 9003852 9064484 9235512 9413118 9458592 9754173 9888528 10419552 10619928 10640916 11124594 11287848 11504922 11585376 12005136 12314016 12550824 12698829 13005564 13596726 13691808 14159904 14187888 14832792 15050464 15339896 15629328 15929892 16734432 16931772 17257383 17340752 17667936 18007704 18128968 18471024 18826236 19508346 19777056 20395089 21239856 21281832 22249188 22575696 23009844 24010272 24927331 25101648 25397658 26011128 27193452 28375776 29262519 29665584 30679792 31258656 31859784 33863544 34514766 34681504 36015408 36257936 36942048 37652472 39016692 40790178 42479712 42563664 44498376 45151392 46019688 49854662 50203296 50795316 51772149 52022256 54386904 58525038 59331168 61185267 61359584 63719568 67727088 69029532 72030816 72515872 74781993 75304944 78033384 81580356 85127328 88996752 92039376 99709324 101590632 103544298 104044512 108773808 117050076 122370534 127439136 135454176 138059064 149563986 150609888 156066768 163160712 177993504 184078752 199418648 203181264 207088596 217547616 224345979 234100152 244741068 276118128 299127972 312133536 326321424 398837296 406362528 414177192 448691958 468200304 489482136 552236256 598255944 652642848 673037937 797674592 828354384 897383916 936400608 978964272 1196511888 1346075874 1656708768 1794767832 1957928544 2393023776 2692151748 3589535664 5384303496 7179071328 10768606992 21537213984
• Sum of all divisors σ(n): 79489226880
• Sum of proper divisors (its aliquot sum) s(n): 57952012896
• 21537213984 is an abundant number, because the sum of its proper divisors (57952012896) is greater than itself. Its abundance is 36414798912

Bases of 21537213984

• Binary: 10100000011101101111100111000100000₂
• Hexadecimal: 0x503B7CE20
• Base-36: 9W6P8O0

Squares and roots of 21537213984

• 21537213984 squared (21537213984²) is 463851586192605152256
• 21537213984 cubed (21537213984³) is 9990070868647957002558372347904
• The square root of 21537213984 is 146755.6267541383
• The cube root of 21537213984 is 2782.2522844549

Scales and comparisons

• 21,537,213,984 seconds is equal to 684 years, 42 weeks, 3 days, 7 hours, 26 minutes, 24 seconds.
• To count from 1 to 21,537,213,984 would take you about one thousand, three hundred sixty-nine years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21537213984 cubic inches would be around 231.9 feet tall.

Recreational maths with 21537213984

• 21537213984 backwards is 48931273512
• The number of decimal digits it has is: 11
• The sum of 21537213984's digits is 45
• More coming soon!