820421212240

Names of 820421212240

• Cardinal: 820421212240 can be written as Eight hundred twenty billion, four hundred twenty-one million, two hundred twelve thousand, two hundred forty.

Scientific notation

• Scientific notation: 8.2042121224 × 10¹¹

Factors of 820421212240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 23439

Divisors of 820421212240

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 35 40 56 67 70 80 112 134 140 268 280 335 469 536 560 670 938 977 1072 1340 1876 1954 2345 2680 3752 3908 4690 4885 5360 6839 7504 7816 9380 9770 13678 15632 18760 19540 22381 27356 34195 37520 39080 44762 54712 65459 68390 78160 89524 109424 111905 130918 136780 156667 179048 223810 261836 273560 313334 327295 358096 447620 458213 523672 547120 626668 654590 783335 895240 916426 1047344 1253336 1309180 1499527 1566670 1790480 1832852 2291065 2506672 2618360 2999054 3133340 3665704 4582130 5236720 5998108 6266680 7331408 7497635 9164260 10496689 11996216 12533360 14995270 18328520 20993378 21866237 23992432 29990540 36657040 41986756 43732474 52483445 59981080 83973512 87464948 104966890 109331185 119962160 153063659 167947024 174929896 209933780 218662370 306127318 349859792 419867560 437324740 612254636 765318295 839735120 874649480 1224509272 1465037879 1530636590 1749298960 2449018544 2930075758 3061273180 5860151516 6122546360 7325189395 10255265153 11720303032 12245092720 14650378790 20510530306 23440606064 29300757580 41021060612 51276325765 58601515160 82042121224 102552651530 117203030320 164084242448 205105303060 410210606120 820421212240
• Sum of all divisors σ(n): 2214876881664
• Sum of proper divisors (its aliquot sum) s(n): 1394455669424
• 820421212240 is an abundant number, because the sum of its proper divisors (1394455669424) is greater than itself. Its abundance is 574034457184

Bases of 820421212240

• Binary: 1011111100000100111010100011100001010000₂
• Hexadecimal: 0xBF04EA3850
• Base-36: AGW9LUTS

Squares and roots of 820421212240

• 820421212240 squared (820421212240²) is 673090965493351125817600
• 820421212240 cubed (820421212240³) is 552218105857847140303244153127424000
• The square root of 820421212240 is 905771.0595067609
• The cube root of 820421212240 is 9361.5039931689

Scales and comparisons

• 820,421,212,240 seconds is equal to 26,086 years, 44 weeks, 3 days, 21 hours, 10 minutes, 40 seconds.
• To count from 1 to 820,421,212,240 would take you about fifty-two thousand, one hundred seventy-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 820421212240 cubic inches would be around 780.1 feet tall.

Recreational maths with 820421212240

• 820421212240 backwards is 042212124028
• 820421212240 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 820421212240's digits is 28
• More coming soon!