21215836800

Names of 21215836800

• Cardinal: 21215836800 can be written as Twenty-one billion, two hundred fifteen million, eight hundred thirty-six thousand, eight hundred.

Scientific notation

• Scientific notation: 2.12158368 × 10¹⁰

Factors of 21215836800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 2576

Divisors of 21215836800

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 25 30 32 34 36 40 45 48 50 51 60 64 68 72 75 80 85 90 96 100 102 120 128 136 144 150 153 160 170 180 192 200 204 225 240 255 272 288 289 300 306 320 340 360 384 400 408 425 450 480 510 544 576 578 600 612 640 680 720 765 800 816 850 867 900 960 1020 1088 1152 1156 1200 1224 1275 1360 1440 1445 1530 1600 1632 1700 1734 1800 1920 2040 2176 2312 2400 2448 2549 2550 2601 2720 2880 2890 3060 3200 3264 3400 3468 3600 3825 4080 4335 4624 4800 4896 5098 5100 5202 5440 5760 5780 6120 6528 6800 6936 7200 7225 7647 7650 8160 8670 9248 9600 9792 10196 10200 10404 10880 11560 12240 12745 13005 13600 13872 14400 14450 15294 15300 16320 17340 18496 19584 20392 20400 20808 21675 22941 23120 24480 25490 26010 27200 27744 28800 28900 30588 30600 32640 34680 36992 38235 40784 40800 41616 43333 43350 45882 46240 48960 50980 52020 54400 55488 57800 61176 61200 63725 65025 69360 76470 81568 81600 83232 86666 86700 91764 92480 97920 101960 104040 110976 114705 115600 122352 122400 127450 129999 130050 138720 152940 163136 163200 166464 173332 173400 183528 184960 191175 203920 208080 216665 229410 231200 244704 244800 254900 259998 260100 277440 305880 326272 332928 346664 346800 367056 382350 389997 407840 416160 433330 458820 462400 489408 489600 509800 519996 520200 554880 573525 611760 649995 693328 693600 734112 736661 764700 779994 815680 832320 866660 917640 924800 978816 1019600 1039992 1040400 1083325 1147050 1223520 1299990 1386656 1387200 1468224 1473322 1529400 1559988 1631360 1664640 1733320 1835280 1949985 2039200 2079984 2080800 2166650 2209983 2294100 2447040 2599980 2773312 2774400 2936448 2946644 3058800 3119976 3249975 3466640 3670560 3683305 3899970 4078400 4159968 4161600 4333300 4419966 4588200 4894080 5199960 5546624 5893288 6117600 6239952 6499950 6629949 6933280 7341120 7366610 7799940 8156800 8319936 8323200 8666600 8839932 9176400 9749925 10399920 11049915 11786576 12235200 12479904 12999900 13259898 13866560 14682240 14733220 15599880 16639872 17333200 17679864 18352800 18416525 19499850 20799840 22099830 23573152 24470400 24959808 25999800 26519796 27733120 29466440 31199760 33149745 34666400 35359728 36705600 36833050 38999700 41599680 44199660 47146304 49919616 51999600 53039592 55249575 58932880 62399520 66299490 69332800 70719456 73411200 73666100 77999400 83199360 88399320 94292608 103999200 106079184 110499150 117865760 124799040 132598980 138665600 141438912 147332200 155998800 165748725 176798640 207998400 212158368 220998300 235731520 249598080 265197960 282877824 294664400 311997600 331497450 353597280 415996800 424316736 441996600 471463040 530395920 589328800 623995200 662994900 707194560 848633472 883993200 1060791840 1178657600 1247990400 1325989800 1414389120 1767986400 2121583680 2357315200 2651979600 3535972800 4243167360 5303959200 7071945600 10607918400 21215836800
• Sum of all divisors σ(n): 80449580250
• Sum of proper divisors (its aliquot sum) s(n): 59233743450
• 21215836800 is an abundant number, because the sum of its proper divisors (59233743450) is greater than itself. Its abundance is 38017906650

Bases of 21215836800

• Binary: 10011110000100011111111101010000000₂
• Hexadecimal: 0x4F08FFA80
• Base-36: 9QVD0G0

Squares and roots of 21215836800

• 21215836800 squared (21215836800²) is 450111731124234240000
• 21215836800 cubed (21215836800³) is 9549497029297234160812032000000
• The square root of 21215836800 is 145656.5714274505
• The cube root of 21215836800 is 2768.3439992575

Scales and comparisons

• 21,215,836,800 seconds is equal to 674 years, 31 weeks, 16 hours.
• To count from 1 to 21,215,836,800 would take you about one thousand, three hundred forty-nine 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 21215836800 cubic inches would be around 230.7 feet tall.

Recreational maths with 21215836800

• 21215836800 backwards is 00863851212
• 21215836800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21215836800's digits is 36
• More coming soon!