21099954720

Names of 21099954720

• Cardinal: 21099954720 can be written as Twenty-one billion, ninety-nine million, nine hundred fifty-four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.109995472 × 10¹⁰

Factors of 21099954720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 4267

Divisors of 21099954720

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 48 52 60 65 78 80 96 104 120 130 156 160 195 208 240 260 312 390 416 480 520 624 780 1040 1063 1248 1560 2080 2126 3120 3181 3189 4252 5315 6240 6362 6378 8504 9543 10630 12724 12756 13819 15905 15945 17008 19086 21260 25448 25512 27638 31810 31890 34016 38172 41353 41457 42520 47715 50896 51024 55276 63620 63780 69095 76344 82706 82914 85040 95430 101792 102048 110552 124059 127240 127560 138190 152688 165412 165828 170080 190860 206765 207285 221104 248118 254480 255120 276380 305376 330824 331656 381720 413530 414570 442208 496236 508960 510240 552760 620295 661648 663312 763440 827060 829140 992472 1105520 1240590 1323296 1326624 1526880 1654120 1658280 1984944 2211040 2481180 3308240 3316560 3381403 3969888 4962360 6616480 6633120 6762806 9924720 10144209 13525612 16907015 19849440 20288418 27051224 33814030 40576836 43958239 50721045 54102448 67628060 81153672 87916478 101442090 108204896 131874717 135256120 162307344 175832956 202884180 219791195 263749434 270512240 324614688 351665912 405768360 439582390 527498868 541024480 659373585 703331824 811536720 879164780 1054997736 1318747170 1406663648 1623073440 1758329560 2109995472 2637494340 3516659120 4219990944 5274988680 7033318240 10549977360 21099954720
• Sum of all divisors σ(n): 71667396864
• Sum of proper divisors (its aliquot sum) s(n): 50567442144
• 21099954720 is an abundant number, because the sum of its proper divisors (50567442144) is greater than itself. Its abundance is 29467487424

Bases of 21099954720

• Binary: 10011101001101001111100001000100000₂
• Hexadecimal: 0x4E9A7C220
• Base-36: 9OYD99C

Squares and roots of 21099954720

• 21099954720 squared (21099954720²) is 445208089186050278400
• 21099954720 cubed (21099954720³) is 9393870522803382529883394048000
• The square root of 21099954720 is 145258.2346030683
• The cube root of 21099954720 is 2763.2945116011

Scales and comparisons

• 21,099,954,720 seconds is equal to 670 years, 47 weeks, 3 days, 10 hours, 32 minutes.
• To count from 1 to 21,099,954,720 would take you about one thousand, three hundred forty-one 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 21099954720 cubic inches would be around 230.3 feet tall.

Recreational maths with 21099954720

• 21099954720 backwards is 02745999012
• 21099954720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21099954720's digits is 48
• More coming soon!