21998808

Names of 21998808

• Cardinal: 21998808 can be written as Twenty-one million, nine hundred ninety-eight thousand, eight hundred eight.

Scientific notation

• Scientific notation: 2.1998808 × 10⁷

Factors of 21998808

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1274

Divisors of 21998808

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 18 19 24 26 36 38 39 52 57 72 76 78 104 114 117 152 156 171 228 234 247 312 342 456 468 494 684 741 936 988 1237 1368 1482 1976 2223 2474 2964 3711 4446 4948 5928 7422 8892 9896 11133 14844 16081 17784 22266 23503 29688 32162 44532 47006 48243 64324 70509 89064 94012 96486 128648 141018 144729 188024 192972 211527 282036 289458 305539 385944 423054 564072 578916 611078 846108 916617 1157832 1222156 1692216 1833234 2444312 2749851 3666468 5499702 7332936 10999404 21998808
• Sum of all divisors σ(n): 67594800
• Sum of proper divisors (its aliquot sum) s(n): 45595992
• 21998808 is an abundant number, because the sum of its proper divisors (45595992) is greater than itself. Its abundance is 23597184

Bases of 21998808

• Binary: 1010011111010110011011000₂
• Hexadecimal: 0x14FACD8
• Base-36: D3IE0

Squares and roots of 21998808

• 21998808 squared (21998808²) is 483947553420864
• 21998808 cubed (21998808³) is 10646269309775330330112
• The square root of 21998808 is 4690.2886904751
• The cube root of 21998808 is 280.1988723213

Scales and comparisons

• 21,998,808 seconds is equal to 36 weeks, 2 days, 14 hours, 46 minutes, 48 seconds.
• To count from 1 to 21,998,808 would take you about two 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 21998808 cubic inches would be around 23.3 feet tall.

Recreational maths with 21998808

• 21998808 backwards is 80889912
• The number of decimal digits it has is: 8
• The sum of 21998808's digits is 45
• More coming soon!