21004249440

Names of 21004249440

• Cardinal: 21004249440 can be written as Twenty-one billion, four million, two hundred forty-nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.100424944 × 10¹⁰

Factors of 21004249440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 45776

Divisors of 21004249440

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 977 1954 2931 3908 4885 5862 7816 9770 11724 14655 15632 19540 23448 29310 31264 39080 44789 46896 58620 78160 89578 93792 117240 134367 156320 179156 223945 234480 268734 358312 447890 468960 537468 671835 716624 895780 1074936 1343670 1433248 1791560 2149872 2687340 3583120 4299744 5374680 7166240 10749360 21498720 43758853 87517706 131276559 175035412 218794265 262553118 350070824 437588530 525106236 656382795 700141648 875177060 1050212472 1312765590 1400283296 1750354120 2100424944 2625531180 3500708240 4200849888 5251062360 7001416480 10502124720 21004249440
• Sum of all divisors σ(n): 66232585440
• Sum of proper divisors (its aliquot sum) s(n): 45228336000
• 21004249440 is an abundant number, because the sum of its proper divisors (45228336000) is greater than itself. Its abundance is 24224086560

Bases of 21004249440

• Binary: 10011100011111100110110100101100000₂
• Hexadecimal: 0x4E3F36960
• Base-36: 9NDDYLC

Squares and roots of 21004249440

• 21004249440 squared (21004249440²) is 441178494537740313600
• 21004249440 cubed (21004249440³) is 9266623146834375040798224384000
• The square root of 21004249440 is 144928.4286811943
• The cube root of 21004249440 is 2759.1102572073

Scales and comparisons

• 21,004,249,440 seconds is equal to 667 years, 45 weeks, 1 day, 17 hours, 44 minutes.
• To count from 1 to 21,004,249,440 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 21004249440 cubic inches would be around 229.9 feet tall.

Recreational maths with 21004249440

• 21004249440 backwards is 04494240012
• 21004249440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21004249440's digits is 30
• More coming soon!