21745231872

Names of 21745231872

• Cardinal: 21745231872 can be written as Twenty-one billion, seven hundred forty-five million, two hundred thirty-one thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 2.1745231872 × 10¹⁰

Factors of 21745231872

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 156

Divisors of 21745231872

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 19 21 23 24 26 28 32 38 39 42 46 48 52 56 57 64 69 76 78 84 89 91 92 96 104 112 114 128 133 138 152 156 161 168 178 182 184 192 208 224 228 247 256 266 267 273 276 299 304 312 322 336 356 364 368 384 399 416 437 448 456 483 494 512 532 534 546 552 598 608 623 624 644 672 712 728 736 741 768 798 832 874 896 897 912 966 988 1024 1064 1068 1092 1104 1157 1196 1216 1246 1248 1288 1311 1344 1424 1456 1472 1482 1536 1596 1664 1691 1729 1748 1792 1794 1824 1869 1932 1976 2047 2048 2093 2128 2136 2184 2208 2314 2392 2432 2492 2496 2576 2622 2688 2848 2912 2944 2964 3059 3072 3192 3328 3382 3458 3471 3496 3584 3588 3648 3738 3864 3952 4094 4186 4256 4272 4368 4416 4628 4784 4864 4984 4992 5073 5152 5187 5244 5376 5681 5696 5824 5888 5928 6118 6141 6144 6279 6384 6656 6764 6916 6942 6992 7168 7176 7296 7476 7728 7904 8099 8188 8372 8512 8544 8736 8832 9177 9256 9568 9728 9968 9984 10146 10304 10374 10488 10752 11362 11392 11648 11776 11837 11856 12236 12282 12558 12768 13312 13528 13832 13884 13984 14329 14336 14352 14592 14952 15456 15808 16198 16376 16744 17024 17043 17088 17472 17664 18354 18512 19136 19456 19936 19968 20292 20608 20748 20976 21504 21983 22724 22784 23296 23552 23674 23712 24297 24472 24564 25116 25536 26611 26624 27056 27664 27768 27968 28658 28704 29184 29904 30912 31616 32396 32752 33488 34048 34086 34176 34944 35328 35511 36708 37024 38272 38893 38912 39767 39872 39936 40584 41216 41496 41952 42987 43008 43966 45448 45568 46592 47104 47348 47424 48594 48944 49128 50232 51072 53222 54112 55328 55536 55936 57316 57408 58368 59808 61824 63232 64792 65504 65949 66976 68096 68172 68352 69888 70656 71022 73416 74048 76544 77786 79534 79744 79833 79872 81168 82432 82992 83904 85974 87932 90896 91136 93184 94696 94848 97188 97888 98256 100464 102144 106444 108224 110656 111072 111872 114632 114816 116679 116736 119301 119616 123648 126464 129584 131008 131898 133952 136192 136344 136704 139776 141312 142044 146832 148096 153088 153881 155572 159068 159488 159666 162336 164864 165984 167808 171948 175864 181792 182272 186277 186368 189392 189696 194376 195776 196512 200928 204288 212888 216448 221312 222144 223744 229264 229632 233358 238602 239232 247296 252928 259168 262016 263796 267904 272251 272384 272688 273408 279552 284088 293664 296192 306176 307762 311144 318136 318976 319332 324672 329728 331968 335616 343896 351728 363584 372554 378784 379392 388752 391552 393024 401856 408576 425776 432896 442624 444288 447488 458528 459264 461643 466716 477204 478464 494592 505609 505856 518336 524032 527592 535808 544502 545376 546816 558831 559104 568176 587328 592384 612352 615524 622288 636272 637952 638664 649344 663936 671232 687792 703456 727168 745108 757568 758784 777504 783104 786048 803712 816753 817152 851552 865792 885248 888576 894976 917056 918528 923286 933432 954408 956928 989184 1011218 1036672 1048064 1055184 1071616 1089004 1090752 1117662 1136352 1174656 1184768 1231048 1244576 1272544 1275904 1277328 1298688 1327872 1342464 1375584 1406912 1454336 1490216 1515136 1516827 1517568 1555008 1566208 1572096 1607424 1633506 1703104 1731584 1770496 1777152 1834112 1837056 1846572 1866864 1908816 1913856 2022436 2073344 2096128 2110368 2143232 2178008 2181504 2235324 2272704 2349312 2369536 2462096 2489152 2545088 2554656 2597376 2655744 2684928 2751168 2813824 2908672 2980432 3030272 3033654 3110016 3132416 3144192 3214848 3267012 3406208 3463168 3539263 3540992 3554304 3668224 3693144 3733728 3817632 3827712 4044872 4146688 4192256 4220736 4286464 4356016 4363008 4470648 4545408 4698624 4924192 4978304 5090176 5109312 5194752 5311488 5502336 5627648 5817344 5960864 6060544 6067308 6220032 6264832 6288384 6429696 6534024 6812416 7078526 7108608 7336448 7386288 7467456 7635264 8089744 8293376 8441472 8712032 8726016 8941296 9090816 9397248 9848384 9956608 10180352 10218624 10389504 10617789 10622976 11004672 11255296 11634688 11921728 12121088 12134616 12440064 12576768 12859392 13068048 13624832 14157052 14672896 14772576 14934912 15270528 16179488 16586752 16882944 17424064 17452032 17882592 18181632 18794496 19696768 19913216 20360704 20437248 21235578 22009344 22510592 23843456 24242176 24269232 24880128 26136096 27249664 28314104 29345792 29545152 29869824 30541056 32358976 33765888 34848128 34904064 35765184 36363264 39393536 39826432 40721408 40874496 42471156 44018688 45021184 47686912 48538464 49760256 52272192 54499328 56628208 59090304 59739648 61082112 64717952 67531776 69696256 71530368 72726528 78787072 79652864 81442816 81748992 84942312 88037376 95373824 97076928 104544384 113256416 118180608 119479296 122164224 129435904 135063552 139392512 143060736 157574144 163497984 169884624 190747648 194153856 209088768 226512832 236361216 238958592 244328448 258871808 278785024 286121472 315148288 339769248 381495296 388307712 418177536 453025664 472722432 517743616 557570048 572242944 679538496 776615424 836355072 906051328 945444864 1035487232 1144485888 1359076992 1553230848 1672710144 1812102656 2718153984 3106461696 3624205312 5436307968 7248410624 10872615936 21745231872
• Sum of all divisors σ(n): 79252992000
• Sum of proper divisors (its aliquot sum) s(n): 57507760128
• 21745231872 is an abundant number, because the sum of its proper divisors (57507760128) is greater than itself. Its abundance is 35762528256

Bases of 21745231872

• Binary: 10100010000000111011110100000000000₂
• Hexadecimal: 0x5101DE800
• Base-36: 9ZMJSAO

Squares and roots of 21745231872

• 21745231872 squared (21745231872²) is 472855109167044624384
• 21745231872 cubed (21745231872³) is 10282343990697258138201225166848
• The square root of 21745231872 is 147462.6456835765
• The cube root of 21745231872 is 2791.1810911303

Scales and comparisons

• 21,745,231,872 seconds is equal to 691 years, 22 weeks, 2 days, 22 hours, 11 minutes, 12 seconds.
• To count from 1 to 21,745,231,872 would take you about one thousand, three hundred eighty-two 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 21745231872 cubic inches would be around 232.6 feet tall.

Recreational maths with 21745231872

• 21745231872 backwards is 27813254712
• 21745231872 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21745231872's digits is 42
• More coming soon!