Base | Representation |
---|---|
bin | 110011111110111… |
… | …010011010100111 |
3 | 2020210001210202002 |
4 | 303332322122213 |
5 | 3241231131330 |
6 | 222312435515 |
7 | 30416661455 |
oct | 6376723247 |
9 | 2223053662 |
10 | 872130215 |
11 | 408327380 |
12 | 2040a8b9b |
13 | 10b8b91a8 |
14 | 83b839d5 |
15 | 51873e45 |
hex | 33fba6a7 |
872130215 has 16 divisors (see below), whose sum is σ = 1191338496. Its totient is φ = 606698400.
The previous prime is 872130179. The next prime is 872130239. The reversal of 872130215 is 512031278.
It is not a de Polignac number, because 872130215 - 28 = 872129959 is a prime.
It is a super-2 number, since 2×8721302152 = 1521222223831892450, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343451 + ... + 345980.
It is an arithmetic number, because the mean of its divisors is an integer number (74458656).
Almost surely, 2872130215 is an apocalyptic number.
872130215 is a deficient number, since it is larger than the sum of its proper divisors (319208281).
872130215 is a wasteful number, since it uses less digits than its factorization.
872130215 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 689470.
The product of its (nonzero) digits is 3360, while the sum is 29.
The square root of 872130215 is about 29531.8508563212. The cubic root of 872130215 is about 955.4187887581.
The spelling of 872130215 in words is "eight hundred seventy-two million, one hundred thirty thousand, two hundred fifteen".
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