20212920

Names of 20212920

• Cardinal: 20212920 can be written as Twenty million, two hundred twelve thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.021292 × 10⁷

Factors of 20212920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 647

Divisors of 20212920

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 18 20 21 24 26 28 30 35 36 39 40 42 45 52 56 60 63 65 70 72 78 84 90 91 104 105 117 120 126 130 140 156 168 180 182 195 210 234 252 260 273 280 312 315 360 364 390 420 455 468 504 520 546 585 617 630 728 780 819 840 910 936 1092 1170 1234 1260 1365 1560 1638 1820 1851 2184 2340 2468 2520 2730 3085 3276 3640 3702 4095 4319 4680 4936 5460 5553 6170 6552 7404 8021 8190 8638 9255 10920 11106 12340 12957 14808 16042 16380 17276 18510 21595 22212 24063 24680 25914 27765 32084 32760 34552 37020 38871 40105 43190 44424 48126 51828 55530 56147 64168 64785 72189 74040 77742 80210 86380 96252 103656 111060 112294 120315 129570 144378 155484 160420 168441 172760 192504 194355 222120 224588 240630 259140 280735 288756 310968 320840 336882 360945 388710 449176 481260 505323 518280 561470 577512 673764 721890 777420 842205 962520 1010646 1122940 1347528 1443780 1554840 1684410 2021292 2245880 2526615 2887560 3368820 4042584 5053230 6737640 10106460 20212920
• Sum of all divisors σ(n): 80982720
• Sum of proper divisors (its aliquot sum) s(n): 60769800
• 20212920 is an abundant number, because the sum of its proper divisors (60769800) is greater than itself. Its abundance is 40556880

Bases of 20212920

• Binary: 1001101000110110010111000₂
• Hexadecimal: 0x1346CB8
• Base-36: C18E0

Squares and roots of 20212920

• 20212920 squared (20212920²) is 408562134926400
• 20212920 cubed (20212920³) is 8258233748296529088000
• The square root of 20212920 is 4495.8781122267
• The cube root of 20212920 is 272.4016197901

Scales and comparisons

• 20,212,920 seconds is equal to 33 weeks, 2 days, 22 hours, 42 minutes.
• To count from 1 to 20,212,920 would take you about fifty 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 20212920 cubic inches would be around 22.7 feet tall.

Recreational maths with 20212920

• 20212920 backwards is 02921202
• 20212920 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20212920's digits is 18
• More coming soon!