Base | Representation |
---|---|
bin | 1111101011111… |
… | …01010011111000 |
3 | 100011121020001121 |
4 | 13311331103320 |
5 | 232141212042 |
6 | 21020155024 |
7 | 3155312350 |
oct | 765752370 |
9 | 304536047 |
10 | 131585272 |
11 | 68304a65 |
12 | 38098a74 |
13 | 21352210 |
14 | 13693b60 |
15 | b843367 |
hex | 7d7d4f8 |
131585272 has 32 divisors (see below), whose sum is σ = 303660000. Its totient is φ = 52055424.
The previous prime is 131585263. The next prime is 131585299. The reversal of 131585272 is 272585131.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89647 + ... + 91102.
It is an arithmetic number, because the mean of its divisors is an integer number (9489375).
Almost surely, 2131585272 is an apocalyptic number.
It is an amenable number.
131585272 is an abundant number, since it is smaller than the sum of its proper divisors (172074728).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131585272 is a wasteful number, since it uses less digits than its factorization.
131585272 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 180775 (or 180771 counting only the distinct ones).
The product of its digits is 16800, while the sum is 34.
The square root of 131585272 is about 11471.0623745144. The cubic root of 131585272 is about 508.6305333163.
The spelling of 131585272 in words is "one hundred thirty-one million, five hundred eighty-five thousand, two hundred seventy-two".
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