21439847520

Names of 21439847520

• Cardinal: 21439847520 can be written as Twenty-one billion, four hundred thirty-nine million, eight hundred forty-seven thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.143984752 × 10¹⁰

Factors of 21439847520

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 163643

Divisors of 21439847520

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 24 26 28 30 32 35 36 39 40 42 45 48 52 56 60 63 65 70 72 78 80 84 90 91 96 104 105 112 117 120 126 130 140 144 156 160 168 180 182 195 208 210 224 234 240 252 260 273 280 288 312 315 336 360 364 390 416 420 455 468 480 504 520 546 560 585 624 630 672 720 728 780 819 840 910 936 1008 1040 1092 1120 1170 1248 1260 1365 1440 1456 1560 1638 1680 1820 1872 2016 2080 2184 2340 2520 2730 2912 3120 3276 3360 3640 3744 4095 4368 4680 5040 5460 6240 6552 7280 8190 8736 9360 10080 10920 13104 14560 16380 18720 21840 26208 32760 43680 65520 131040 163613 327226 490839 654452 818065 981678 1145291 1308904 1472517 1636130 1963356 2126969 2290582 2454195 2617808 2945034 3272260 3435873 3926712 4253938 4581164 4908390 5235616 5726455 5890068 6380907 6544520 6871746 7362585 7853424 8507876 9162328 9816780 10307619 10634845 11452910 11780136 12761814 13089040 13743492 14725170 14888783 15706848 17015752 17179365 18324656 19142721 19633560 20615238 21269690 22905820 23560272 25523628 26178080 27486984 29450340 29777566 31904535 34031504 34358730 36649312 38285442 39267120 41230476 42539380 44666349 45811640 47120544 51047256 51538095 54973968 58900680 59555132 63809070 68063008 68717460 74443915 76570884 78534240 82460952 85078760 89332698 91623280 95713605 102094512 103076190 109947936 117801360 119110264 127618140 133999047 137434920 148887830 153141768 164921904 170157520 178665396 183246560 191427210 204189024 206152380 223331745 235602720 238220528 255236280 267998094 274869840 297775660 306283536 329843808 340315040 357330792 382854420 412304760 446663490 476441056 510472560 535996188 549739680 595551320 612567072 669995235 714661584 765708840 824609520 893326980 1020945120 1071992376 1191102640 1339990470 1429323168 1531417680 1649219040 1786653960 2143984752 2382205280 2679980940 3062835360 3573307920 4287969504 5359961880 7146615840 10719923760 21439847520
• Sum of all divisors σ(n): 90047909952
• Sum of proper divisors (its aliquot sum) s(n): 68608062432
• 21439847520 is an abundant number, because the sum of its proper divisors (68608062432) is greater than itself. Its abundance is 47168214912

Bases of 21439847520

• Binary: 10011111101111010100001110001100000₂
• Hexadecimal: 0x4FDEA1C60
• Base-36: 9UKQC80

Squares and roots of 21439847520

• 21439847520 squared (21439847520²) is 459667061680850150400
• 21439847520 cubed (21439847520³) is 9855191712403862128545067008000
• The square root of 21439847520 is 146423.5210613377
• The cube root of 21439847520 is 2778.0532373989

Scales and comparisons

• 21,439,847,520 seconds is equal to 681 years, 37 weeks, 3 days, 9 hours, 12 minutes.
• To count from 1 to 21,439,847,520 would take you about one thousand, three hundred sixty-three 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 21439847520 cubic inches would be around 231.5 feet tall.

Recreational maths with 21439847520

• 21439847520 backwards is 02574893412
• 21439847520 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21439847520's digits is 45
• More coming soon!