Base | Representation |
---|---|
bin | 1111101001100… |
… | …11010100000100 |
3 | 100011000211021222 |
4 | 13310303110010 |
5 | 232102012210 |
6 | 21005455512 |
7 | 3152610611 |
oct | 764632404 |
9 | 304024258 |
10 | 131282180 |
11 | 68118277 |
12 | 37b71598 |
13 | 21277283 |
14 | 13615508 |
15 | b7d3655 |
hex | 7d33504 |
131282180 has 24 divisors (see below), whose sum is σ = 277240320. Its totient is φ = 52218080.
The previous prime is 131282171. The next prime is 131282201. The reversal of 131282180 is 81282131.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14756 + ... + 21915.
It is an arithmetic number, because the mean of its divisors is an integer number (11551680).
Almost surely, 2131282180 is an apocalyptic number.
131282180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
131282180 is an abundant number, since it is smaller than the sum of its proper divisors (145958140).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131282180 is a wasteful number, since it uses less digits than its factorization.
131282180 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 36859 (or 36857 counting only the distinct ones).
The product of its (nonzero) digits is 768, while the sum is 26.
The square root of 131282180 is about 11457.8436016556. The cubic root of 131282180 is about 508.2397085179.
The spelling of 131282180 in words is "one hundred thirty-one million, two hundred eighty-two thousand, one hundred eighty".
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