21398880
21,398,880 is an even composite number composed of five prime numbers multiplied together.
21398880 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21398880:
25 × 3 × 5 × 109 × 409
(2 × 2 × 2 × 2 × 2 × 3 × 5 × 109 × 409)See below for interesting mathematical facts about the number 21398880 from the Numbermatics database.
Names of 21398880
- Cardinal: 21398880 can be written as Twenty-one million, three hundred ninety-eight thousand, eight hundred eighty.
Scientific notation
- Scientific notation: 2.139888 × 107
Factors of 21398880
Divisors of 21398880
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 109 120 160 218 240 327 409 436 480 545 654 818 872 1090 1227 1308 1635 1636 1744 2045 2180 2454 2616 3270 3272 3488 4090 4360 4908 5232 6135 6540 6544 8180 8720 9816 10464 12270 13080 13088 16360 17440 19632 24540 26160 32720 39264 44581 49080 52320 65440 89162 98160 133743 178324 196320 222905 267486 356648 445810 534972 668715 713296 891620 1069944 1337430 1426592 1783240 2139888 2674860 3566480 4279776 5349720 7132960 10699440 21398880
- Sum of all divisors σ(n): 68191200
- Sum of proper divisors (its aliquot sum) s(n): 46792320
- 21398880 is an abundant number, because the sum of its proper divisors (46792320) is greater than itself. Its abundance is 25393440
Bases of 21398880
- Binary: 10100011010000101011000002
- Hexadecimal: 0x1468560
- Base-36: CQNHC
Squares and roots of 21398880
- 21398880 squared (213988802) is 457912065254400
- 21398880 cubed (213988803) is 9798805334931075072000
-
The
square root of 21398880 is 4625.8923463479 -
The
cube root of 21398880 is 277.6282663263
Scales and comparisons
How big is 21398880?- 21,398,880 seconds is equal to 35 weeks, 2 days, 16 hours, 8 minutes.
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To count from 1 to 21,398,880 would take you about twelve 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 21398880 cubic inches would be around 23.1 feet tall.
Recreational maths with 21398880
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The information we have on file for 21398880 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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