21395040
21,395,040 is an even composite number composed of five prime numbers multiplied together.
21395040 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21395040:
25 × 3 × 5 × 292 × 53
(2 × 2 × 2 × 2 × 2 × 3 × 5 × 29 × 29 × 53)See below for interesting mathematical facts about the number 21395040 from the Numbermatics database.
Names of 21395040
- Cardinal: 21395040 can be written as Twenty-one million, three hundred ninety-five thousand and forty.
Scientific notation
- Scientific notation: 2.139504 × 107
Factors of 21395040
Divisors of 21395040
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 29 30 32 40 48 53 58 60 80 87 96 106 116 120 145 159 160 174 212 232 240 265 290 318 348 424 435 464 480 530 580 636 696 795 841 848 870 928 1060 1160 1272 1392 1537 1590 1682 1696 1740 2120 2320 2523 2544 2784 3074 3180 3364 3480 4205 4240 4611 4640 5046 5088 6148 6360 6728 6960 7685 8410 8480 9222 10092 12296 12615 12720 13456 13920 15370 16820 18444 20184 23055 24592 25230 25440 26912 30740 33640 36888 40368 44573 46110 49184 50460 61480 67280 73776 80736 89146 92220 100920 122960 133719 134560 147552 178292 184440 201840 222865 245920 267438 356584 368880 403680 445730 534876 668595 713168 737760 891460 1069752 1337190 1426336 1782920 2139504 2674380 3565840 4279008 5348760 7131680 10697520 21395040
- Sum of all divisors σ(n): 71115408
- Sum of proper divisors (its aliquot sum) s(n): 49720368
- 21395040 is an abundant number, because the sum of its proper divisors (49720368) is greater than itself. Its abundance is 28325328
Bases of 21395040
- Binary: 10100011001110110011000002
- Hexadecimal: 0x1467660
- Base-36: CQKIO
Squares and roots of 21395040
- 21395040 squared (213950402) is 457747736601600
- 21395040 cubed (213950403) is 9793531134500696064000
-
The
square root of 21395040 is 4625.4772726715 -
The
cube root of 21395040 is 277.6116586609
Scales and comparisons
How big is 21395040?- 21,395,040 seconds is equal to 35 weeks, 2 days, 15 hours, 4 minutes.
-
To count from 1 to 21,395,040 would take you about ten hours!
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 21395040 cubic inches would be around 23.1 feet tall.
Recreational maths with 21395040
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The information we have on file for 21395040 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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