21163213920

Names of 21163213920

• Cardinal: 21163213920 can be written as Twenty-one billion, one hundred sixty-three million, two hundred thirteen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.116321392 × 10¹⁰

Factors of 21163213920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 19597

Divisors of 21163213920

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 48 60 62 73 80 93 96 120 124 146 155 160 186 219 240 248 292 310 365 372 438 465 480 496 584 620 730 744 876 930 992 1095 1168 1240 1460 1488 1752 1860 2190 2263 2336 2480 2920 2976 3504 3720 4380 4526 4960 5840 6789 7008 7440 8760 9052 11315 11680 13578 14880 17520 18104 19483 22630 27156 33945 35040 36208 38966 45260 54312 58449 67890 72416 77932 90520 97415 108624 116898 135780 155864 181040 194830 217248 233796 271560 292245 311728 362080 389660 467592 543120 584490 603973 623456 779320 935184 1086240 1168980 1207946 1422259 1558640 1811919 1870368 2337960 2415892 2844518 3019865 3117280 3623838 4266777 4675920 4831784 5689036 6039730 7111295 7247676 8533554 9059595 9351840 9663568 11378072 12079460 14222590 14495352 17067108 18119190 19327136 21333885 22756144 24158920 28445180 28990704 34134216 36238380 42667770 44090029 45512288 48317840 56890360 57981408 68268432 72476760 85335540 88180058 96635680 113780720 132270087 136536864 144953520 170671080 176360116 220450145 227561440 264540174 289907040 341342160 352720232 440900290 529080348 661350435 682684320 705440464 881800580 1058160696 1322700870 1410880928 1763601160 2116321392 2645401740 3527202320 4232642784 5290803480 7054404640 10581606960 21163213920
• Sum of all divisors σ(n): 69760825344
• Sum of proper divisors (its aliquot sum) s(n): 48597611424
• 21163213920 is an abundant number, because the sum of its proper divisors (48597611424) is greater than itself. Its abundance is 27434397504

Bases of 21163213920

• Binary: 10011101101011011010000010001100000₂
• Hexadecimal: 0x4ED6D0460
• Base-36: 9Q014DC

Squares and roots of 21163213920

• 21163213920 squared (21163213920²) is 447881623423681766400
• 21163213920 cubed (21163213920³) is 9478614607352260016326668288000
• The square root of 21163213920 is 145475.8190215817
• The cube root of 21163213920 is 2766.0532758003

Scales and comparisons

• 21,163,213,920 seconds is equal to 672 years, 48 weeks, 14 hours, 32 minutes.
• To count from 1 to 21,163,213,920 would take you about one thousand, three hundred forty-five 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 21163213920 cubic inches would be around 230.5 feet tall.

Recreational maths with 21163213920

• 21163213920 backwards is 02931236112
• 21163213920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21163213920's digits is 30
• More coming soon!