21604385840

Names of 21604385840

• Cardinal: 21604385840 can be written as Twenty-one billion, six hundred four million, three hundred eighty-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.160438584 × 10¹⁰

Factors of 21604385840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2809

Divisors of 21604385840

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 8 10 16 20 37 40 41 67 74 80 82 134 148 164 185 205 268 296 328 335 370 410 536 592 656 670 740 820 1072 1340 1480 1517 1640 2479 2657 2680 2747 2960 3034 3280 4958 5314 5360 5494 6068 7585 9916 10628 10988 12136 12395 13285 13735 15170 19832 21256 21976 24272 24790 26570 27470 30340 39664 42512 43952 49580 53140 54940 60680 98309 99160 101639 106280 108937 109880 121360 178019 196618 198320 203278 212560 217874 219760 356038 393236 406556 435748 491545 508195 544685 712076 786472 813112 871496 890095 983090 1016390 1089370 1424152 1572944 1626224 1742992 1780190 1966180 2032780 2178740 2848304 3560380 3932360 4030669 4065560 4357480 6586703 7120760 7298779 7864720 8061338 8131120 8714960 13173406 14241520 14597558 16122676 20153345 26346812 29195116 32245352 32933515 36493895 40306690 52693624 58390232 64490704 65867030 72987790 80613380 105387248 116780464 131734060 145975580 161226760 263468120 270054823 291951160 322453520 526936240 540109646 583902320 1080219292 1350274115 2160438584 2700548230 4320877168 5401096460 10802192920 21604385840
• Sum of all divisors σ(n): 53654940864
• Sum of proper divisors (its aliquot sum) s(n): 32050555024
• 21604385840 is an abundant number, because the sum of its proper divisors (32050555024) is greater than itself. Its abundance is 10446169184

Bases of 21604385840

• Binary: 10100000111101110001100010000110000₂
• Hexadecimal: 0x507B8C430
• Base-36: 9XAOYSW

Squares and roots of 21604385840

• 21604385840 squared (21604385840²) is 466749487523592505600
• 21604385840 cubed (21604385840³) is 10083836019081958593914760704000
• The square root of 21604385840 is 146984.3047403361
• The cube root of 21604385840 is 2785.1417806149

Scales and comparisons

• 21,604,385,840 seconds is equal to 686 years, 49 weeks, 3 days, 18 hours, 17 minutes, 20 seconds.
• To count from 1 to 21,604,385,840 would take you about one thousand, three hundred seventy-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 21604385840 cubic inches would be around 232.1 feet tall.

Recreational maths with 21604385840

• 21604385840 backwards is 04858340612
• 21604385840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21604385840's digits is 41
• More coming soon!