21007310280

Names of 21007310280

• Cardinal: 21007310280 can be written as Twenty-one billion, seven million, three hundred ten thousand, two hundred eighty.

Scientific notation

• Scientific notation: 2.100731028 × 10¹⁰

Factors of 21007310280

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 201551

Divisors of 21007310280

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 33 40 44 55 60 66 79 88 110 120 132 158 165 220 237 264 316 330 395 440 474 632 660 790 869 948 1185 1320 1580 1738 1896 2370 2607 3160 3476 4345 4740 5214 6952 8690 9480 10428 13035 17380 20856 26070 34760 52140 104280 201451 402902 604353 805804 1007255 1208706 1611608 2014510 2215961 2417412 3021765 4029020 4431922 4834824 6043530 6647883 8058040 8863844 11079805 12087060 13295766 15914629 17727688 22159610 24174120 26591532 31829258 33239415 44319220 47743887 53183064 63658516 66478830 79573145 88638440 95487774 127317032 132957660 159146290 175060919 190975548 238719435 265915320 318292580 350121838 381951096 477438870 525182757 636585160 700243676 875304595 954877740 1050365514 1400487352 1750609190 1909755480 2100731028 2625913785 3501218380 4201462056 5251827570 7002436760 10503655140 21007310280
• Sum of all divisors σ(n): 69621811200
• Sum of proper divisors (its aliquot sum) s(n): 48614500920
• 21007310280 is an abundant number, because the sum of its proper divisors (48614500920) is greater than itself. Its abundance is 27607190640

Bases of 21007310280

• Binary: 10011100100001000100001110111001000₂
• Hexadecimal: 0x4E4221DC8
• Base-36: 9NF7KCO

Squares and roots of 21007310280

• 21007310280 squared (21007310280²) is 441307085200193678400
• 21007310280 cubed (21007310280³) is 9270674867562864518243333952000
• The square root of 21007310280 is 144938.9881294885
• The cube root of 21007310280 is 2759.2442742923

Scales and comparisons

• 21,007,310,280 seconds is equal to 667 years, 50 weeks, 2 days, 3 hours, 58 minutes.
• To count from 1 to 21,007,310,280 would take you about one thousand, three hundred thirty-five 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 21007310280 cubic inches would be around 229.9 feet tall.

Recreational maths with 21007310280

• 21007310280 backwards is 08201370012
• 21007310280 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21007310280's digits is 24
• More coming soon!