21031164

Names of 21031164

• Cardinal: 21031164 can be written as Twenty-one million, thirty-one thousand, one hundred sixty-four.

Scientific notation

• Scientific notation: 2.1031164 × 10⁷

Factors of 21031164

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 304

Divisors of 21031164

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 9 11 12 14 18 21 22 27 28 33 36 42 44 54 63 66 77 81 84 99 108 126 132 154 162 189 198 231 243 252 281 297 308 324 378 396 462 486 562 567 594 693 756 843 891 924 972 1124 1134 1188 1386 1686 1701 1782 1967 2079 2268 2529 2673 2772 3091 3372 3402 3564 3934 4158 5058 5346 5901 6182 6237 6804 7587 7868 8316 9273 10116 10692 11802 12364 12474 15174 17703 18546 18711 21637 22761 23604 24948 27819 30348 35406 37092 37422 43274 45522 53109 55638 64911 68283 70812 74844 83457 86548 91044 106218 111276 129822 136566 159327 166914 194733 212436 250371 259644 273132 318654 333828 389466 477981 500742 584199 637308 751113 778932 955962 1001484 1168398 1502226 1752597 1911924 2336796 3004452 3505194 5257791 7010388 10515582 21031164
• Sum of all divisors σ(n): 68979456
• Sum of proper divisors (its aliquot sum) s(n): 47948292
• 21031164 is an abundant number, because the sum of its proper divisors (47948292) is greater than itself. Its abundance is 26917128

Bases of 21031164

• Binary: 1010000001110100011111100₂
• Hexadecimal: 0x140E8FC
• Base-36: CIRR0

Squares and roots of 21031164

• 21031164 squared (21031164²) is 442309859194896
• 21031164 cubed (21031164³) is 9302291187544765738944
• The square root of 21031164 is 4585.9747055561
• The cube root of 21031164 is 276.0288249669

Scales and comparisons

• 21,031,164 seconds is equal to 34 weeks, 5 days, 9 hours, 59 minutes, 24 seconds.
• To count from 1 to 21,031,164 would take you about two hours!

  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 21031164 cubic inches would be around 23 feet tall.

Recreational maths with 21031164

• 21031164 backwards is 46113012
• 21031164 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21031164's digits is 18
• More coming soon!