21261229440

Names of 21261229440

• Cardinal: 21261229440 can be written as Twenty-one billion, two hundred sixty-one million, two hundred twenty-nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.126122944 × 10¹⁰

Factors of 21261229440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 217

Divisors of 21261229440

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 23 24 30 32 33 40 44 46 48 55 60 64 66 69 80 88 92 96 110 115 120 121 128 132 138 160 165 173 176 184 192 220 230 240 242 253 264 276 320 330 345 346 352 363 368 384 440 460 480 484 506 519 528 529 552 605 640 660 690 692 704 726 736 759 865 880 920 960 968 1012 1038 1056 1058 1104 1210 1265 1320 1380 1384 1408 1452 1472 1518 1587 1730 1760 1815 1840 1903 1920 1936 2024 2076 2112 2116 2208 2420 2530 2595 2640 2645 2760 2768 2783 2904 2944 3036 3174 3460 3520 3630 3680 3795 3806 3872 3979 4048 4152 4224 4232 4416 4840 5060 5190 5280 5290 5520 5536 5566 5709 5808 5819 6072 6348 6920 7040 7260 7360 7590 7612 7744 7935 7958 8096 8304 8349 8464 8832 9515 9680 10120 10380 10560 10580 11040 11072 11132 11418 11616 11638 11937 12144 12696 13840 13915 14520 14720 15180 15224 15488 15870 15916 16192 16608 16698 16928 17457 19030 19360 19895 20240 20760 20933 21120 21160 22080 22144 22264 22836 23232 23276 23874 24288 25392 27680 27830 28545 29040 29095 30360 30448 31740 31832 32384 33216 33396 33856 34914 38060 38720 39790 40480 41520 41745 41866 42320 43769 44160 44528 45672 46464 46552 47748 48576 50784 55360 55660 57090 58080 58190 59685 60720 60896 62799 63480 63664 64009 66432 66792 67712 69828 76120 77440 79580 80960 83040 83490 83732 84640 87285 87538 89056 91344 91517 93104 95496 97152 101568 104665 110720 111320 114180 116160 116380 119370 121440 121792 125598 126960 127328 128018 131307 133584 139656 152240 159160 161920 166080 166980 167464 169280 174570 175076 178112 182688 183034 186208 190992 192027 203136 209330 218845 222640 228360 232320 232760 238740 242880 243584 251196 253920 254656 256036 262614 267168 274551 279312 304480 313995 318320 320045 332160 333960 334928 338560 349140 350152 356224 365376 366068 372416 381984 384054 418660 437690 445280 456720 457585 465520 477480 481459 485760 502392 507840 509312 512072 525228 534336 549102 558624 608960 627990 636640 640090 656535 667920 669856 698280 700304 730752 732136 744832 763968 768108 837320 875380 890560 913440 915170 931040 954960 960135 962918 1004784 1006687 1015680 1024144 1050456 1068672 1098204 1117248 1217920 1255980 1273280 1280180 1313070 1335840 1339712 1372755 1396560 1400608 1444377 1464272 1527936 1536216 1674640 1750760 1781120 1826880 1830340 1862080 1909920 1920270 1925836 2009568 2013374 2048288 2100912 2196408 2234496 2407295 2511960 2546560 2560360 2626140 2671680 2679424 2745510 2793120 2801216 2888754 2928544 3020061 3072432 3349280 3501520 3653760 3660680 3724160 3819840 3840540 3851672 4019136 4026748 4096576 4201824 4392816 4814590 5023920 5033435 5120720 5252280 5343360 5491020 5586240 5602432 5777508 5857088 6040122 6144864 6698560 7003040 7221885 7321360 7639680 7681080 7703344 8038272 8053496 8193152 8403648 8785632 9629180 10047840 10066870 10241440 10504560 10982040 11073557 11172480 11555016 11714176 12080244 12289728 13397120 14006080 14443770 14642720 15100305 15362160 15406688 16106992 16807296 17571264 19258360 20095680 20133740 20482880 21009120 21964080 22147114 23110032 24160488 24579456 28012160 28887540 29285440 30200610 30724320 30813376 32213984 33220671 35142528 38516720 40191360 40267480 40965760 42018240 43928160 44294228 46220064 48320976 55367785 57775080 58570880 60401220 61448640 61626752 64427968 66441342 77033440 80534960 84036480 87856320 88588456 92440128 96641952 110735570 115550160 120802440 122897280 128855936 132882684 154066880 161069920 166103355 175712640 177176912 184880256 193283904 221471140 231100320 241604880 265765368 308133760 322139840 332206710 354353824 386567808 442942280 462200640 483209760 531530736 644279680 664413420 708707648 885884560 924401280 966419520 1063061472 1328826840 1417415296 1771769120 1932839040 2126122944 2657653680 3543538240 4252245888 5315307360 7087076480 10630614720 21261229440
• Sum of all divisors σ(n): 78320859120
• Sum of proper divisors (its aliquot sum) s(n): 57059629680
• 21261229440 is an abundant number, because the sum of its proper divisors (57059629680) is greater than itself. Its abundance is 35798400240

Bases of 21261229440

• Binary: 10011110011010001001001110110000000₂
• Hexadecimal: 0x4F3449D80
• Base-36: 9RMDXMO

Squares and roots of 21261229440

• 21261229440 squared (21261229440²) is 452039877300322713600
• 21261229440 cubed (21261229440³) is 9610923547311608999893008384000
• The square root of 21261229440 is 145812.3089454385
• The cube root of 21261229440 is 2770.3169425383

Scales and comparisons

• 21,261,229,440 seconds is equal to 676 years, 2 weeks, 1 day, 1 hour, 4 minutes.
• To count from 1 to 21,261,229,440 would take you about one thousand, three hundred fifty-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 21261229440 cubic inches would be around 230.9 feet tall.

Recreational maths with 21261229440

• 21261229440 backwards is 04492216212
• 21261229440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21261229440's digits is 33
• More coming soon!