21205702800

Names of 21205702800

• Cardinal: 21205702800 can be written as Twenty-one billion, two hundred five million, seven hundred two thousand, eight hundred.

Scientific notation

• Scientific notation: 2.12057028 × 10¹⁰

Factors of 21205702800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 296

Divisors of 21205702800

• Number of divisors d(n): 450
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 36 40 45 48 50 53 54 60 72 75 80 81 90 100 106 108 120 135 144 150 159 162 180 200 212 216 225 233 240 265 270 300 318 324 360 400 405 424 432 450 466 477 530 540 600 636 648 675 699 720 795 810 848 900 932 954 1060 1080 1165 1200 1272 1296 1325 1350 1398 1431 1590 1620 1800 1864 1908 2025 2097 2120 2160 2330 2385 2544 2650 2700 2796 2809 2862 3180 3240 3495 3600 3728 3816 3975 4050 4194 4240 4293 4660 4770 5300 5400 5592 5618 5724 5825 6291 6360 6480 6990 7155 7632 7950 8100 8388 8427 8586 9320 9540 10485 10600 10800 11184 11236 11448 11650 11925 12349 12582 12720 13980 14045 14310 15900 16200 16776 16854 17172 17475 18640 18873 19080 20970 21200 21465 22472 22896 23300 23850 24698 25164 25281 27960 28090 28620 31455 31800 32400 33552 33708 34344 34950 35775 37047 37746 38160 41940 42135 42930 44944 46600 47700 49396 50328 50562 52425 55920 56180 57240 61745 62910 63600 67416 68688 69900 70225 71550 74094 75492 75843 83880 84270 85860 93200 94365 95400 98792 100656 101124 104850 107325 111141 112360 114480 123490 125820 126405 134832 139800 140450 143100 148188 150984 151686 157275 167760 168540 171720 185235 188730 190800 197584 202248 209700 210675 214650 222282 224720 227529 246980 251640 252810 279600 280900 286200 296376 301968 303372 308725 314550 333423 337080 343440 370470 377460 379215 404496 419400 421350 429300 444564 455058 471825 493960 503280 505620 555705 561800 572400 592752 606744 617450 629100 632025 654497 666846 674160 740940 754920 758430 838800 842700 858600 889128 910116 926175 943650 987920 1000269 1011240 1111410 1123600 1137645 1213488 1234900 1258200 1264050 1308994 1333692 1481880 1509840 1516860 1667115 1685400 1717200 1778256 1820232 1852350 1887300 1896075 1963491 2000538 2022480 2222820 2275290 2469800 2516400 2528100 2617988 2667384 2778525 2963760 3033720 3272485 3334230 3370800 3640464 3704700 3774600 3792150 3926982 4001076 4445640 4550580 4939600 5001345 5056200 5235976 5334768 5557050 5688225 5890473 6067440 6544970 6668460 7409400 7549200 7584300 7853964 8002152 8335575 8891280 9101160 9817455 10002690 10112400 10471952 11114100 11376450 11780946 13089940 13336920 14818800 15168600 15707928 16004304 16362425 16671150 17671419 18202320 19634910 20005380 22228200 22752900 23561892 25006725 26179880 26673840 29452365 30337200 31415856 32724850 33342300 35342838 39269820 40010760 44456400 45505800 47123784 49087275 50013450 52359760 53014257 58904730 65449700 66684600 70685676 78539640 80021520 88357095 91011600 94247568 98174550 100026900 106028514 117809460 130899400 133369200 141371352 147261825 157079280 176714190 196349100 200053800 212057028 235618920 261798800 265071285 282742704 294523650 353428380 392698200 400107600 424114056 441785475 471237840 530142570 589047300 706856760 785396400 848228112 883570950 1060285140 1178094600 1325356425 1413713520 1767141900 2120570280 2356189200 2650712850 3534283800 4241140560 5301425700 7068567600 10602851400 21205702800
• Sum of all divisors σ(n): 77901525702
• Sum of proper divisors (its aliquot sum) s(n): 56695822902
• 21205702800 is an abundant number, because the sum of its proper divisors (56695822902) is greater than itself. Its abundance is 35490120102

Bases of 21205702800

• Binary: 10011101111111101010101100010010000₂
• Hexadecimal: 0x4EFF55890
• Base-36: 9QPBT00

Squares and roots of 21205702800

• 21205702800 squared (21205702800²) is 449681831241927840000
• 21205702800 cubed (21205702800³) is 9535819267876076674085952000000
• The square root of 21205702800 is 145621.7799643995
• The cube root of 21205702800 is 2767.9031514389

Scales and comparisons

• 21,205,702,800 seconds is equal to 674 years, 14 weeks, 2 days, 9 hours.
• To count from 1 to 21,205,702,800 would take you about one thousand, three hundred forty-eight 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 21205702800 cubic inches would be around 230.7 feet tall.

Recreational maths with 21205702800

• 21205702800 backwards is 00820750212
• 21205702800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21205702800's digits is 27
• More coming soon!