21397567680

Names of 21397567680

• Cardinal: 21397567680 can be written as Twenty-one billion, three hundred ninety-seven million, five hundred sixty-seven thousand, six hundred eighty.

Scientific notation

• Scientific notation: 2.139756768 × 10¹⁰

Factors of 21397567680

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1483

Divisors of 21397567680

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 37 40 45 48 60 64 72 74 80 90 96 111 120 144 148 157 160 180 185 192 222 240 288 296 314 320 333 360 370 444 471 480 555 576 592 628 666 720 740 785 888 942 960 1110 1184 1256 1279 1332 1413 1440 1480 1570 1665 1776 1884 2220 2355 2368 2512 2558 2664 2826 2880 2960 3140 3330 3552 3768 3837 4440 4710 5024 5116 5328 5652 5809 5920 6280 6395 6660 7065 7104 7536 7674 8880 9420 10048 10232 10656 11304 11511 11618 11840 12560 12790 13320 14130 15072 15348 17427 17760 18840 19185 20464 21312 22608 23022 23236 25120 25580 26640 28260 29045 30144 30696 34854 35520 37680 38370 40928 45216 46044 46472 47323 50240 51160 52281 53280 56520 57555 58090 61392 69708 75360 76740 81856 87135 90432 92088 92944 94646 102320 104562 106560 113040 115110 116180 122784 139416 141969 150720 153480 174270 184176 185888 189292 200803 204640 209124 226080 230220 232360 236615 245568 261405 278832 283938 306960 348540 368352 371776 378584 401606 409280 418248 425907 452160 460440 464720 473230 522810 557664 567876 602409 613920 697080 709845 736704 757168 803212 836496 851814 920880 929440 946460 1004015 1045620 1115328 1135752 1204818 1227840 1394160 1419690 1514336 1606424 1672992 1703628 1807227 1841760 1858880 1892920 2008030 2091240 2129535 2271504 2409636 2788320 2839380 3012045 3028672 3212848 3345984 3407256 3614454 3683520 3785840 4016060 4182480 4259070 4543008 4819272 5576640 5678760 6024090 6425696 6814512 7228908 7429711 7571680 8032120 8364960 8518140 9036135 9086016 9638544 11357520 12048180 12851392 13629024 14457816 14859422 15143360 16064240 16729920 17036280 18072270 19277088 22289133 22715040 24096360 27258048 28915632 29718844 32128480 34072560 36144540 37148555 38554176 44578266 45430080 48192720 57831264 59437688 64256960 66867399 68145120 72289080 74297110 89156532 96385440 111445665 115662528 118875376 133734798 136290240 144578160 148594220 178313064 192770880 222891330 237750752 267469596 289156320 297188440 334336995 356626128 445782660 475501504 534939192 578312640 594376880 668673990 713252256 891565320 1069878384 1188753760 1337347980 1426504512 1783130640 2139756768 2377507520 2674695960 3566261280 4279513536 5349391920 7132522560 10698783840 21397567680
• Sum of all divisors σ(n): 76128798720
• Sum of proper divisors (its aliquot sum) s(n): 54731231040
• 21397567680 is an abundant number, because the sum of its proper divisors (54731231040) is greater than itself. Its abundance is 33333663360

Bases of 21397567680

• Binary: 10011111011011001001111100011000000₂
• Hexadecimal: 0x4FB64F8C0
• Base-36: 9TVK4W0

Squares and roots of 21397567680

• 21397567680 squared (21397567680²) is 457855902620180582400
• 21397567680 cubed (21397567680³) is 9797002664002803345725816832000
• The square root of 21397567680 is 146279.0746484267
• The cube root of 21397567680 is 2776.2259088023

Scales and comparisons

• 21,397,567,680 seconds is equal to 680 years, 19 weeks, 4 days, 48 minutes.
• To count from 1 to 21,397,567,680 would take you about one thousand, three hundred sixty 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 21397567680 cubic inches would be around 231.4 feet tall.

Recreational maths with 21397567680

• 21397567680 backwards is 08676579312
• The number of decimal digits it has is: 11
• The sum of 21397567680's digits is 54
• More coming soon!