16405109640

Names of 16405109640

• Cardinal: 16405109640 can be written as Sixteen billion, four hundred five million, one hundred nine thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.640510964 × 10¹⁰

Factors of 16405109640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 13920

Divisors of 16405109640

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 5281 8629 10562 15843 17258 21124 25887 26405 31686 34516 42248 43145 47529 51774 52810 63372 69032 77661 79215 86290 95058 103548 105620 126744 129435 155322 158430 172580 190116 207096 211240 237645 258870 310644 316860 345160 380232 388305 475290 517740 621288 633720 776610 950580 1035480 1553220 1901160 3106440 45569749 91139498 136709247 182278996 227848745 273418494 364557992 410127741 455697490 546836988 683546235 820255482 911394980 1093673976 1367092470 1640510964 1822789960 2050638705 2734184940 3281021928 4101277410 5468369880 8202554820 16405109640
• Sum of all divisors σ(n): 53332882200
• Sum of proper divisors (its aliquot sum) s(n): 36927772560
• 16405109640 is an abundant number, because the sum of its proper divisors (36927772560) is greater than itself. Its abundance is 20522662920

Bases of 16405109640

• Binary: 1111010001110100100001101110001000₂
• Hexadecimal: 0x3D1D21B88
• Base-36: 7JB6FM0

Squares and roots of 16405109640

• 16405109640 squared (16405109640²) is 269127622300420929600
• 16405109640 cubed (16405109640³) is 4415068150990914368238721344000
• The square root of 16405109640 is 128082.4329875101
• The cube root of 16405109640 is 2540.9320178985

Scales and comparisons

• 16,405,109,640 seconds is equal to 521 years, 32 weeks, 5 days, 22 hours, 54 minutes.
• To count from 1 to 16,405,109,640 would take you about one thousand and forty-three 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 16405109640 cubic inches would be around 211.7 feet tall.

Recreational maths with 16405109640

• 16405109640 backwards is 04690150461
• 16405109640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 16405109640's digits is 36
• More coming soon!