21349131840

Names of 21349131840

• Cardinal: 21349131840 can be written as Twenty-one billion, three hundred forty-nine million, one hundred thirty-one thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.134913184 × 10¹⁰

Factors of 21349131840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 255656

Divisors of 21349131840

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 29 30 32 36 40 45 48 58 60 64 72 80 87 90 96 116 120 144 145 160 174 180 192 232 240 261 288 290 320 348 360 435 464 480 522 576 580 696 720 870 928 960 1044 1160 1305 1392 1440 1740 1856 2088 2320 2610 2784 2880 3480 4176 4640 5220 5568 6960 8352 9280 10440 13920 16704 20880 27840 41760 83520 255617 511234 766851 1022468 1278085 1533702 2044936 2300553 2556170 3067404 3834255 4089872 4601106 5112340 6134808 7412893 7668510 8179744 9202212 10224680 11502765 12269616 14825786 15337020 16359488 18404424 20449360 22238679 23005530 24539232 29651572 30674040 36808848 37064465 40898720 44477358 46011060 49078464 59303144 61348080 66716037 73617696 74128930 81797440 88954716 92022120 111193395 118606288 122696160 133432074 147235392 148257860 177909432 184044240 222386790 237212576 245392320 266864148 296515720 333580185 355818864 368088480 444773580 474425152 533728296 593031440 667160370 711637728 736176960 889547160 1067456592 1186062880 1334320740 1423275456 1779094320 2134913184 2372125760 2668641480 3558188640 4269826368 5337282960 7116377280 10674565920 21349131840
• Sum of all divisors σ(n): 75964557240
• Sum of proper divisors (its aliquot sum) s(n): 54615425400
• 21349131840 is an abundant number, because the sum of its proper divisors (54615425400) is greater than itself. Its abundance is 33266293560

Bases of 21349131840

• Binary: 10011111000100000011110011001000000₂
• Hexadecimal: 0x4F881E640
• Base-36: 9T2PZK0

Squares and roots of 21349131840

• 21349131840 squared (21349131840²) is 455785430321701785600
• 21349131840 cubed (21349131840³) is 9730623242689145033937813504000
• The square root of 21349131840 is 146113.4211494619
• The cube root of 21349131840 is 2774.1295580147

Scales and comparisons

• 21,349,131,840 seconds is equal to 678 years, 43 weeks, 3 days, 10 hours, 24 minutes.
• To count from 1 to 21,349,131,840 would take you about one thousand, three hundred fifty-seven 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 21349131840 cubic inches would be around 231.2 feet tall.

Recreational maths with 21349131840

• 21349131840 backwards is 04813194312
• 21349131840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21349131840's digits is 36
• More coming soon!