21808288840

Names of 21808288840

• Cardinal: 21808288840 can be written as Twenty-one billion, eight hundred eight million, two hundred eighty-eight thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.180828884 × 10¹⁰

Factors of 21808288840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1040

Divisors of 21808288840

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 8 10 13 17 20 26 29 34 40 52 58 65 68 85 97 104 116 130 136 145 170 194 221 232 260 290 340 377 388 442 485 493 520 580 680 754 776 877 884 970 986 1105 1160 1261 1508 1649 1754 1768 1885 1940 1972 2210 2465 2522 2813 3016 3298 3508 3770 3880 3944 4385 4420 4930 5044 5626 6305 6409 6596 7016 7540 8245 8770 8840 9860 10088 11252 11401 12610 12818 13192 14065 14909 15080 16490 17540 19720 21437 22504 22802 25220 25433 25636 28130 29818 32045 32980 35080 36569 42874 45604 47821 50440 50866 51272 56260 57005 59636 64090 65960 73138 74545 85069 85748 91208 95642 101732 107185 112520 114010 119272 127165 128180 146276 149090 170138 171496 182845 191284 193817 203464 214370 228020 239105 254330 256360 292552 298180 330629 340276 365690 382568 387634 425345 428740 432361 456040 478210 508660 596360 621673 661258 680552 731380 775268 850690 857480 864722 956420 969085 1017320 1105897 1243346 1322516 1446173 1462760 1550536 1653145 1701380 1729444 1912840 1938170 2161805 2211794 2467001 2486692 2645032 2892346 3108365 3306290 3402760 3458888 3876340 4323610 4423588 4934002 4973384 5529485 5620693 5784692 6216730 6612580 7230865 7752680 8647220 8847176 9868004 11058970 11241386 11569384 12335005 12433460 13225160 14461730 17294440 18800249 19736008 22117940 22482772 24670010 24866920 28103465 28923460 32071013 37600498 41939017 44235880 44965544 49340020 56206930 57846920 64142026 75200996 83878034 94001245 98680040 112413860 128284052 150401992 160355065 167756068 188002490 209695085 224827720 256568104 320710130 335512136 376004980 419390170 545207221 641420260 752009960 838780340 1090414442 1282840520 1677560680 2180828884 2726036105 4361657768 5452072210 10904144420 21808288840
• Sum of all divisors σ(n): 58544337600
• Sum of proper divisors (its aliquot sum) s(n): 36736048760
• 21808288840 is an abundant number, because the sum of its proper divisors (36736048760) is greater than itself. Its abundance is 14927759920

Bases of 21808288840

• Binary: 10100010011111000000001010001001000₂
• Hexadecimal: 0x513E01448
• Base-36: A0O3BD4

Squares and roots of 21808288840

• 21808288840 squared (21808288840²) is 475601462128868545600
• 21808288840 cubed (21808288840³) is 10372054058832686544835511104000
• The square root of 21808288840 is 147676.2974887981
• The cube root of 21808288840 is 2793.8764492979

Scales and comparisons

• 21,808,288,840 seconds is equal to 693 years, 22 weeks, 4 days, 18 hours, 40 seconds.
• To count from 1 to 21,808,288,840 would take you about one thousand, three hundred eighty-six 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 21808288840 cubic inches would be around 232.8 feet tall.

Recreational maths with 21808288840

• 21808288840 backwards is 04888280812
• The number of decimal digits it has is: 11
• The sum of 21808288840's digits is 49
• More coming soon!