21309238320

Names of 21309238320

• Cardinal: 21309238320 can be written as Twenty-one billion, three hundred nine million, two hundred thirty-eight thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.130923832 × 10¹⁰

Factors of 21309238320

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 742

Divisors of 21309238320

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 37 40 41 48 60 74 80 82 107 111 120 123 148 164 185 205 214 222 240 246 296 321 328 370 410 428 444 492 535 547 555 592 615 642 656 740 820 856 888 984 1070 1094 1110 1230 1284 1480 1517 1605 1640 1641 1712 1776 1968 2140 2188 2220 2460 2568 2735 2960 3034 3210 3280 3282 3959 4280 4376 4387 4440 4551 4920 5136 5470 6068 6420 6564 7585 7918 8205 8560 8752 8774 8880 9102 9840 10940 11877 12136 12840 13128 13161 15170 15836 16410 17548 18204 19795 20239 21880 21935 22427 22755 23754 24272 25680 26256 26322 30340 31672 32820 35096 36408 39590 40478 43760 43870 44854 45510 47508 52644 58529 59385 60680 60717 63344 65640 65805 67281 70192 72816 79180 80956 87740 89708 91020 95016 101195 105288 112135 117058 118770 121360 121434 131280 131610 134562 158360 161912 162319 175480 175587 179416 182040 190032 202390 210576 224270 234116 237540 242868 263220 269124 292645 303585 316720 323824 324638 336405 350960 351174 358832 364080 404780 448540 468232 475080 485736 486957 526440 538248 585290 607170 649276 672810 702348 809560 811595 829799 877935 897080 936464 950160 971472 973914 1052880 1076496 1170580 1214340 1298552 1345620 1404696 1619120 1623190 1659598 1755870 1794160 1947828 2165573 2341160 2399689 2428680 2434785 2489397 2597104 2691240 2809392 3246380 3319196 3511740 3895656 4148995 4331146 4682320 4799378 4857360 4869570 4978794 5382480 6492760 6496719 6638392 7023480 7199067 7791312 8297990 8662292 9598756 9739140 9957588 10827865 11998445 12446985 12985520 12993438 13276784 14046960 14398134 16595980 17324584 19197512 19478280 19915176 21655730 23996890 24893970 25986876 28796268 32483595 33191960 34649168 35995335 38395024 38956560 39830352 43311460 47993780 49787940 51973752 57592536 64967190 66383920 71990670 86622920 88788493 95987560 99575880 103947504 115185072 129934380 143981340 173245840 177576986 191975120 199151760 259868760 266365479 287962680 355153972 443942465 519737520 532730958 575925360 710307944 887884930 1065461916 1331827395 1420615888 1775769860 2130923832 2663654790 3551539720 4261847664 5327309580 7103079440 10654619160 21309238320
• Sum of all divisors σ(n): 70276502016
• Sum of proper divisors (its aliquot sum) s(n): 48967263696
• 21309238320 is an abundant number, because the sum of its proper divisors (48967263696) is greater than itself. Its abundance is 27658025376

Bases of 21309238320

• Binary: 10011110110001000010010110000110000₂
• Hexadecimal: 0x4F6212C30
• Base-36: 9SEYXIO

Squares and roots of 21309238320

• 21309238320 squared (21309238320²) is 454083637778556422400
• 21309238320 cubed (21309238320³) is 9676176454635814190488186368000
• The square root of 21309238320 is 145976.8417249803
• The cube root of 21309238320 is 2772.4005447239

Scales and comparisons

• 21,309,238,320 seconds is equal to 677 years, 29 weeks, 3 days, 16 hours, 52 minutes.
• To count from 1 to 21,309,238,320 would take you about one thousand, three hundred fifty-five 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 21309238320 cubic inches would be around 231 feet tall.

Recreational maths with 21309238320

• 21309238320 backwards is 02383290312
• The number of decimal digits it has is: 11
• The sum of 21309238320's digits is 33
• More coming soon!