3998870920

Names of 3998870920

• Cardinal: 3998870920 can be written as Three billion, nine hundred ninety-eight million, eight hundred seventy thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 3.99887092 × 10⁹

Factors of 3998870920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 17644

Divisors of 3998870920

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 8 10 11 20 22 40 44 47 55 88 94 110 121 188 220 235 242 376 440 470 484 517 605 940 968 1034 1210 1880 2068 2420 2585 4136 4840 5170 5687 10340 11374 17579 20680 22748 28435 35158 45496 56870 70316 87895 113740 140632 175790 193369 227480 351580 386738 703160 773476 826213 966845 1546952 1652426 1933690 2127059 3304852 3867380 4131065 4254118 6609704 7734760 8262130 8508236 9088343 10635295 16524260 17016472 18176686 21270590 33048520 36353372 42541180 45441715 72706744 85082360 90883430 99971773 181766860 199943546 363533720 399887092 499858865 799774184 999717730 1999435460 3998870920
• Sum of all divisors σ(n): 10100764800
• Sum of proper divisors (its aliquot sum) s(n): 6101893880
• 3998870920 is an abundant number, because the sum of its proper divisors (6101893880) is greater than itself. Its abundance is 2103022960

Bases of 3998870920

• Binary: 11101110010110011110110110001000₂
• Hexadecimal: 0xEE59ED88
• Base-36: 1U4TOJS

Squares and roots of 3998870920

• 3998870920 squared (3998870920²) is 15990968634821646400
• 3998870920 cubed (3998870920³) is 63945819456420381175482688000
• The square root of 3998870920 is 63236.6264122305
• The cube root of 3998870920 is 1587.2516793477

Scales and comparisons

• 3,998,870,920 seconds is equal to 127 years, 7 weeks, 6 days, 5 hours, 28 minutes, 40 seconds.
• To count from 1 to 3,998,870,920 would take you about two hundred fifty-four 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 3998870920 cubic inches would be around 132.3 feet tall.

Recreational maths with 3998870920

• 3998870920 backwards is 0290788993
• 3998870920 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 3998870920's digits is 55
• More coming soon!