21198867742

Names of 21198867742

• Cardinal: 21198867742 can be written as Twenty-one billion, one hundred ninety-eight million, eight hundred sixty-seven thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 2.1198867742 × 10¹⁰

Factors of 21198867742

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2609

Divisors of 21198867742

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 13 26 61 71 79 122 142 158 793 923 1027 1586 1846 2054 2383 4331 4766 4819 5609 8662 9638 11218 30979 56303 61958 62647 72917 112606 125294 145363 145834 169193 188257 290726 338386 342149 376514 684298 1889719 2199509 2447341 3779438 4399018 4447937 4894682 8895874 10320773 11483677 13366247 20641546 22967354 26732494 134170049 149287801 173761211 268340098 298575602 347522422 815341067 1630682134 10599433871 21198867742
• Sum of all divisors σ(n): 35757711360
• Sum of proper divisors (its aliquot sum) s(n): 14558843618
• 21198867742 is a deficient number, because the sum of its proper divisors (14558843618) is less than itself. Its deficiency is 6640024124

Bases of 21198867742

• Binary: 10011101111100011010000110100011110₂
• Hexadecimal: 0x4EF8D0D1E
• Base-36: 9QL9B1A

Squares and roots of 21198867742

• 21198867742 squared (21198867742²) is 449391993542808178564
• 21198867742 cubed (21198867742³) is 9526601435427708592654155482488
• The square root of 21198867742 is 145598.3095437581
• The cube root of 21198867742 is 2767.6057344067

Scales and comparisons

• 21,198,867,742 seconds is equal to 674 years, 3 weeks, 6 hours, 22 minutes, 22 seconds.
• To count from 1 to 21,198,867,742 would take you about one thousand, three hundred forty-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 21198867742 cubic inches would be around 230.6 feet tall.

Recreational maths with 21198867742

• 21198867742 backwards is 24776889112
• The number of decimal digits it has is: 11
• The sum of 21198867742's digits is 55
• More coming soon!