21538716160

Names of 21538716160

• Cardinal: 21538716160 can be written as Twenty-one billion, five hundred thirty-eight million, seven hundred sixteen thousand, one hundred sixty.

Scientific notation

• Scientific notation: 2.153871616 × 10¹⁰

Factors of 21538716160

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 1543

Divisors of 21538716160

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 4 5 8 10 13 16 19 20 23 26 32 38 40 46 52 64 65 76 80 92 95 104 115 128 130 152 160 184 190 208 230 247 256 260 299 304 320 368 380 416 437 460 494 512 520 598 608 640 736 760 832 874 920 988 1040 1196 1216 1235 1280 1472 1481 1495 1520 1664 1748 1840 1976 2080 2185 2392 2432 2470 2560 2944 2962 2990 3040 3328 3496 3680 3952 4160 4370 4784 4864 4940 5681 5888 5924 5980 6080 6656 6992 7360 7405 7904 8320 8740 9568 9728 9880 11362 11776 11848 11960 12160 13984 14720 14810 15808 16640 17480 19136 19253 19760 22724 23696 23920 24320 27968 28139 28405 29440 29620 31616 33280 34063 34960 38272 38506 39520 45448 47392 47840 48640 55936 56278 56810 58880 59240 63232 68126 69920 76544 77012 79040 90896 94784 95680 96265 111872 112556 113620 118480 126464 136252 139840 140695 153088 154024 158080 170315 181792 189568 191360 192530 223744 225112 227240 236960 272504 279680 281390 308048 316160 340630 363584 365807 379136 382720 385060 442819 450224 454480 473920 545008 559360 562780 616096 632320 647197 681260 727168 731614 758272 765440 770120 885638 900448 908960 947840 1090016 1118720 1125560 1232192 1294394 1362520 1454336 1463228 1540240 1771276 1800896 1817920 1829035 1895680 2180032 2214095 2251120 2464384 2588788 2725040 2908672 2926456 3080480 3235985 3542552 3601792 3635840 3658070 3791360 4360064 4428190 4502240 4928768 5177576 5450080 5852912 6160960 6471970 7085104 7203584 7271680 7316140 8413561 8720128 8856380 9004480 9857536 10355152 10900160 11705824 12321920 12943940 14170208 14407168 14543360 14632280 16827122 17440256 17712760 18008960 20710304 21800320 23411648 24643840 25887880 28340416 29264560 33654244 35425520 36017920 41420608 42067805 43600640 46823296 49287680 51775760 56680832 58529120 67308488 70851040 72035840 82841216 84135610 87201280 93646592 103551520 113361664 117058240 134616976 141702080 165682432 168271220 187293184 207103040 226723328 234116480 269233952 283404160 331364864 336542440 414206080 468232960 538467904 566808320 673084880 828412160 936465920 1076935808 1133616640 1346169760 1656824320 2153871616 2692339520 4307743232 5384679040 10769358080 21538716160
• Sum of all divisors σ(n): 61128587520
• Sum of proper divisors (its aliquot sum) s(n): 39589871360
• 21538716160 is an abundant number, because the sum of its proper divisors (39589871360) is greater than itself. Its abundance is 18051155200

Bases of 21538716160

• Binary: 10100000011110011101011101000000000₂
• Hexadecimal: 0x503CEBA00
• Base-36: 9W7LFR4

Squares and roots of 21538716160

• 21538716160 squared (21538716160²) is 463916293821045145600
• 21538716160 cubed (21538716160³) is 9992161374610653225624272896000
• The square root of 21538716160 is 146760.7446151727
• The cube root of 21538716160 is 2782.3169683929

Scales and comparisons

• 21,538,716,160 seconds is equal to 684 years, 44 weeks, 6 days, 16 hours, 42 minutes, 40 seconds.
• To count from 1 to 21,538,716,160 would take you about one thousand, three hundred sixty-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 21538716160 cubic inches would be around 231.9 feet tall.

Recreational maths with 21538716160

• 21538716160 backwards is 06161783512
• 21538716160 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21538716160's digits is 40
• More coming soon!