21273293745

Names of 21273293745

• Cardinal: 21273293745 can be written as Twenty-one billion, two hundred seventy-three million, two hundred ninety-three thousand, seven hundred forty-five.

Scientific notation

• Scientific notation: 2.1273293745 × 10¹⁰

Factors of 21273293745

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4670

Divisors of 21273293745

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 5 9 11 15 23 33 37 45 55 69 99 111 115 121 165 185 207 253 333 345 363 407 495 555 605 759 851 1035 1089 1221 1265 1665 1815 2035 2277 2553 2783 3663 3795 4255 4477 4591 5445 6105 7659 8349 9361 11385 12765 13431 13773 13915 18315 22385 22955 25047 28083 38295 40293 41319 41745 46805 50501 67155 68865 84249 102971 105593 125235 140415 151503 169867 201465 206595 252505 308913 316779 421245 454509 509601 514855 527965 555511 757515 849335 926739 950337 1161523 1528803 1544565 1583895 1666533 1868537 2272545 2548005 2777555 3484569 3906941 4633695 4751685 4999599 5605611 5807615 7644015 8332665 9342685 10453707 11720823 12776753 16816833 17422845 19534705 20553907 24997995 28028055 35162469 38330259 42976351 52268535 58604115 61661721 63883765 84084165 102769535 114990777 128929053 175812345 184985163 191651295 214881755 308308605 386787159 472739861 574953885 644645265 924925815 1418219583 1933935795 2363699305 4254658749 7091097915 21273293745
• Sum of all divisors σ(n): 43445316096
• Sum of proper divisors (its aliquot sum) s(n): 22172022351
• 21273293745 is an abundant number, because the sum of its proper divisors (22172022351) is greater than itself. Its abundance is 898728606

Bases of 21273293745

• Binary: 10011110011111111001011001110110001₂
• Hexadecimal: 0x4F3FCB3B1
• Base-36: 9RTKII9

Squares and roots of 21273293745

• 21273293745 squared (21273293745²) is 452553026761056125025
• 21273293745 cubed (21273293745³) is 9627293473476792874088270468625
• The square root of 21273293745 is 145853.6723740613
• The cube root of 21273293745 is 2770.8408324207

Scales and comparisons

• 21,273,293,745 seconds is equal to 676 years, 22 weeks, 16 hours, 15 minutes, 45 seconds.
• To count from 1 to 21,273,293,745 would take you about one thousand, three hundred fifty-two 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 21273293745 cubic inches would be around 230.9 feet tall.

Recreational maths with 21273293745

• 21273293745 backwards is 54739237212
• 21273293745 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21273293745's digits is 45
• More coming soon!