21357852672

Names of 21357852672

• Cardinal: 21357852672 can be written as Twenty-one billion, three hundred fifty-seven million, eight hundred fifty-two thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 2.1357852672 × 10¹⁰

Factors of 21357852672

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 267419

Divisors of 21357852672

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 64 78 96 104 128 156 192 208 256 312 384 416 512 624 768 832 1024 1248 1536 1664 2048 2496 3072 3328 4992 6144 6656 9984 13312 19968 26624 39936 79872 267401 534802 802203 1069604 1604406 2139208 3208812 3476213 4278416 6417624 6952426 8556832 10428639 12835248 13904852 17113664 20857278 25670496 27809704 34227328 41714556 51340992 55619408 68454656 83429112 102681984 111238816 136909312 166858224 205363968 222477632 273818624 333716448 410727936 444955264 547637248 667432896 821455872 889910528 1334865792 1642911744 1779821056 2669731584 3559642112 5339463168 7119284224 10678926336 21357852672
• Sum of all divisors σ(n): 61320626640
• Sum of proper divisors (its aliquot sum) s(n): 39962773968
• 21357852672 is an abundant number, because the sum of its proper divisors (39962773968) is greater than itself. Its abundance is 18604921296

Bases of 21357852672

• Binary: 10011111001000001101111100000000000₂
• Hexadecimal: 0x4F906F800
• Base-36: 9T7WWLC

Squares and roots of 21357852672

• 21357852672 squared (21357852672²) is 456157870758857539584
• 21357852672 cubed (21357852672³) is 9742552598840896169471480168448
• The square root of 21357852672 is 146143.2607820149
• The cube root of 21357852672 is 2774.5072380787

Scales and comparisons

• 21,357,852,672 seconds is equal to 679 years, 5 weeks, 6 days, 8 hours, 51 minutes, 12 seconds.
• To count from 1 to 21,357,852,672 would take you about one thousand, three hundred fifty-eight 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 21357852672 cubic inches would be around 231.2 feet tall.

Recreational maths with 21357852672

• 21357852672 backwards is 27625875312
• 21357852672 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21357852672's digits is 48
• More coming soon!