20721417920

Names of 20721417920

• Cardinal: 20721417920 can be written as Twenty billion, seven hundred twenty-one million, four hundred seventeen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.072141792 × 10¹⁰

Factors of 20721417920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 551

Divisors of 20721417920

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 43 49 56 64 70 73 80 86 98 112 140 146 160 172 196 215 224 245 280 292 301 320 344 365 392 421 430 448 490 511 560 584 602 688 730 784 842 860 980 1022 1120 1168 1204 1376 1460 1505 1568 1684 1720 1960 2044 2105 2107 2240 2336 2408 2555 2752 2920 2947 3010 3136 3139 3368 3440 3577 3920 4088 4210 4214 4672 4816 5110 5840 5894 6020 6278 6736 6880 7154 7840 8176 8420 8428 9632 10220 10535 11680 11788 12040 12556 13472 13760 14308 14735 15680 15695 16352 16840 16856 17885 18103 19264 20440 20629 21070 21973 23360 23576 24080 25112 26944 28616 29470 30733 31390 32704 33680 33712 35770 36206 40880 41258 42140 43946 47152 48160 50224 57232 58940 61466 62780 67360 67424 71540 72412 81760 82516 84280 87892 90515 94304 96320 100448 103145 109865 114464 117880 122932 125560 126721 134720 134848 143080 144824 153665 153811 163520 165032 168560 175784 181030 188608 200896 206290 215131 219730 228928 235760 245864 251120 253442 286160 289648 307330 307622 330064 337120 351568 362060 412580 430262 439460 471520 491728 502240 506884 572320 579296 614660 615244 633605 660128 674240 703136 724120 769055 825160 860524 878920 887047 943040 983456 1004480 1013768 1075655 1144640 1158592 1229320 1230488 1267210 1320256 1321519 1406272 1448240 1505917 1538110 1650320 1721048 1757840 1774094 1966912 2027536 2151310 2458640 2460976 2534420 2643038 2896480 3011834 3076220 3300640 3442096 3515680 3548188 4055072 4302620 4435235 4917280 4921952 5068840 5286076 5792960 6023668 6152440 6601280 6607595 6884192 7031360 7096376 7529585 8110144 8605240 8870470 9250633 9834560 9843904 10137680 10572152 12047336 12304880 13215190 13768384 14192752 15059170 17210480 17740940 18501266 20275360 21144304 24094672 24609760 26430380 28385504 30118340 34420960 35481880 37002532 40550720 42288608 46253165 48189344 49219520 52860760 56771008 60236680 64754431 68841920 70963760 74005064 84577216 92506330 96378688 105721520 120473360 129508862 141927520 148010128 185012660 211443040 240946720 259017724 283855040 296020256 323772155 370025320 422886080 481893440 518035448 592040512 647544310 740050640 1036070896 1295088620 1480101280 2072141792 2590177240 2960202560 4144283584 5180354480 10360708960 20721417920
• Sum of all divisors σ(n): 59679705888
• Sum of proper divisors (its aliquot sum) s(n): 38958287968
• 20721417920 is an abundant number, because the sum of its proper divisors (38958287968) is greater than itself. Its abundance is 18236870048

Bases of 20721417920

• Binary: 10011010011000101111011111011000000₂
• Hexadecimal: 0x4D317BEC0
• Base-36: 9IOZWE8

Squares and roots of 20721417920

• 20721417920 squared (20721417920²) is 429377160615297126400
• 20721417920 cubed (20721417920³) is 8897303590412536101109465088000
• The square root of 20721417920 is 143949.3588731815
• The cube root of 20721417920 is 2746.6700374903

Scales and comparisons

• 20,721,417,920 seconds is equal to 658 years, 45 weeks, 4 days, 5 hours, 25 minutes, 20 seconds.
• To count from 1 to 20,721,417,920 would take you about one thousand, three hundred seventeen 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 20721417920 cubic inches would be around 228.9 feet tall.

Recreational maths with 20721417920

• 20721417920 backwards is 02971412702
• 20721417920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20721417920's digits is 35
• More coming soon!