21604402820

Names of 21604402820

• Cardinal: 21604402820 can be written as Twenty-one billion, six hundred four million, four hundred two thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 2.160440282 × 10¹⁰

Factors of 21604402820

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 5042

Divisors of 21604402820

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 10 11 13 14 20 22 26 28 31 35 44 49 52 55 62 65 70 77 91 98 110 124 130 140 143 154 155 182 196 217 220 245 260 286 308 310 341 364 385 403 434 455 490 539 572 620 637 682 715 770 806 868 910 980 1001 1078 1085 1274 1364 1430 1519 1540 1612 1705 1820 2002 2015 2156 2170 2387 2548 2695 2821 2860 3038 3185 3410 4004 4030 4340 4433 4774 4973 5005 5390 5642 6076 6370 6820 7007 7595 8060 8866 9548 9946 10010 10780 11284 11935 12740 14014 14105 15190 16709 17732 19747 19892 20020 22165 23870 24865 28028 28210 30380 31031 33418 34811 35035 39494 44330 47740 49730 54703 56420 62062 64649 66836 69622 70070 78988 83545 88660 98735 99460 109406 124124 129298 139244 140140 154163 155155 167090 174055 197470 217217 218812 243677 258596 273515 308326 310310 323245 334180 348110 382921 394940 434434 452543 487354 547030 616652 620620 646490 696220 711139 765842 770815 868868 905086 974708 1079141 1086085 1094060 1218385 1292980 1422278 1531684 1541630 1695793 1810172 1914605 2004119 2158282 2172170 2262715 2436770 2680447 2844556 3083260 3167801 3391586 3555695 3829210 4008238 4316564 4344340 4525430 4873540 4977973 5360894 5395705 6335602 6783172 7111390 7553987 7658420 8016476 8478965 9050860 9955946 10020595 10721788 10791410 11870551 12671204 13402235 14028833 14222780 15107974 15839005 16957930 19911892 20041190 21582820 22045309 23741102 24889865 26804470 28057666 30215948 31678010 33915860 34845811 37769935 40082380 44090618 47482204 49779730 53608940 56115332 59352755 63356020 69691622 70144165 75539870 83093857 88181236 98201831 99559460 110226545 118705510 139383244 140288330 151079740 154317163 166187714 174229055 196403662 220453090 237411020 280576660 308634326 332375428 348458110 392807324 415469285 440906180 491009155 617268652 696916220 771585815 830938570 982018310 1080220141 1543171630 1661877140 1964036620 2160440282 3086343260 4320880564 5401100705 10802201410 21604402820
• Sum of all divisors σ(n): 64016096256
• Sum of proper divisors (its aliquot sum) s(n): 42411693436
• 21604402820 is an abundant number, because the sum of its proper divisors (42411693436) is greater than itself. Its abundance is 20807290616

Bases of 21604402820

• Binary: 10100000111101110010000011010000100₂
• Hexadecimal: 0x507B90684
• Base-36: 9XAPBWK

Squares and roots of 21604402820

• 21604402820 squared (21604402820²) is 466750221208823952400
• 21604402820 cubed (21604402820³) is 10083859795319540006114105768000
• The square root of 21604402820 is 146984.3625015941
• The cube root of 21604402820 is 2785.1425102767

Scales and comparisons

• 21,604,402,820 seconds is equal to 686 years, 49 weeks, 3 days, 23 hours, 20 seconds.
• To count from 1 to 21,604,402,820 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 21604402820 cubic inches would be around 232.1 feet tall.

Recreational maths with 21604402820

• 21604402820 backwards is 02820440612
• The number of decimal digits it has is: 11
• The sum of 21604402820's digits is 29
• More coming soon!