400972390

Names of 400972390

• Cardinal: 400972390 can be written as Four hundred million, nine hundred seventy-two thousand, three hundred ninety.

Scientific notation

• Scientific notation: 4.0097239 × 10⁸

Factors of 400972390

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3359

Divisors of 400972390

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 5 7 10 13 14 19 26 35 38 49 65 70 91 95 98 130 133 182 190 245 247 266 455 490 494 637 665 910 931 1235 1274 1330 1729 1862 2470 3185 3313 3458 4655 6370 6626 8645 9310 12103 16565 17290 23191 24206 33130 43069 46382 60515 62947 86138 115955 121030 125894 162337 215345 231910 301483 314735 324674 430690 440629 602966 629470 811685 818311 881258 1507415 1623370 1636622 2110381 2203145 3014830 3084403 4091555 4220762 4406290 5728177 6168806 8183110 10551905 11456354 15422015 21103810 28640885 30844030 40097239 57281770 80194478 200486195 400972390
• Sum of all divisors σ(n): 952045920
• Sum of proper divisors (its aliquot sum) s(n): 551073530
• 400972390 is an abundant number, because the sum of its proper divisors (551073530) is greater than itself. Its abundance is 150101140

Bases of 400972390

• Binary: 10111111001100101101001100110₂
• Hexadecimal: 0x17E65A66
• Base-36: 6MQ89Y

Squares and roots of 400972390

• 400972390 squared (400972390²) is 160778857542312100
• 400972390 cubed (400972390³) is 64467882770210408862919000
• The square root of 400972390 is 20024.2949938319
• The cube root of 400972390 is 737.4028691387

Scales and comparisons

• 400,972,390 seconds is equal to 12 years, 38 weeks, 6 days, 21 hours, 13 minutes, 10 seconds.
• To count from 1 to 400,972,390 would take you about nineteen 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 400972390 cubic inches would be around 61.5 feet tall.

Recreational maths with 400972390

• 400972390 backwards is 093279004
• The number of decimal digits it has is: 9
• The sum of 400972390's digits is 34
• More coming soon!