20931840

Names of 20931840

• Cardinal: 20931840 can be written as Twenty million, nine hundred thirty-one thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.093184 × 10⁷

Factors of 20931840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 112

Divisors of 20931840

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 30 32 36 40 45 46 48 60 64 69 72 79 80 90 92 96 115 120 128 138 144 158 160 180 184 192 207 230 237 240 256 276 288 316 320 345 360 368 384 395 414 460 474 480 552 576 632 640 690 711 720 736 768 790 828 920 948 960 1035 1104 1152 1185 1264 1280 1380 1422 1440 1472 1580 1656 1817 1840 1896 1920 2070 2208 2304 2370 2528 2760 2844 2880 2944 3160 3312 3555 3634 3680 3792 3840 4140 4416 4740 5056 5451 5520 5688 5760 5888 6320 6624 7110 7268 7360 7584 8280 8832 9085 9480 10112 10902 11040 11376 11520 12640 13248 14220 14536 14720 15168 16353 16560 17664 18170 18960 20224 21804 22080 22752 25280 26496 27255 28440 29072 29440 30336 32706 33120 36340 37920 43608 44160 45504 50560 52992 54510 56880 58144 60672 65412 66240 72680 75840 81765 87216 88320 91008 101120 109020 113760 116288 130824 132480 145360 151680 163530 174432 182016 218040 227520 232576 261648 264960 290720 303360 327060 348864 436080 455040 465152 523296 581440 654120 697728 872160 910080 1046592 1162880 1308240 1395456 1744320 2093184 2325760 2616480 3488640 4186368 5232960 6977280 10465920 20931840
• Sum of all divisors σ(n): 76527360
• Sum of proper divisors (its aliquot sum) s(n): 55595520
• 20931840 is an abundant number, because the sum of its proper divisors (55595520) is greater than itself. Its abundance is 34663680

Bases of 20931840

• Binary: 1001111110110010100000000₂
• Hexadecimal: 0x13F6500
• Base-36: CGN40

Squares and roots of 20931840

• 20931840 squared (20931840²) is 438141925785600
• 20931840 cubed (20931840³) is 9171116687836053504000
• The square root of 20931840 is 4575.1327849583
• The cube root of 20931840 is 275.5936047971

Scales and comparisons

• 20,931,840 seconds is equal to 34 weeks, 4 days, 6 hours, 24 minutes.
• To count from 1 to 20,931,840 would take you about fifty-one weeks!

  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 20931840 cubic inches would be around 23 feet tall.

Recreational maths with 20931840

• 20931840 backwards is 04813902
• The number of decimal digits it has is: 8
• The sum of 20931840's digits is 27
• More coming soon!