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131680160 = 255823001
BaseRepresentation
bin1111101100101…
…00011110100000
3100011210001012222
413312110132200
5232202231120
621022210212
73156156113
oct766243640
9304701188
10131680160
116836a287
1238123968
1321386471
14136ba57a
15b861525
hex7d947a0

131680160 has 24 divisors (see below), whose sum is σ = 311094756. Its totient is φ = 52672000.

The previous prime is 131680141. The next prime is 131680163. The reversal of 131680160 is 61086131.

It can be written as a sum of positive squares in 2 ways, for example, as 110923024 + 20757136 = 10532^2 + 4556^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131680163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411341 + ... + 411660.

Almost surely, 2131680160 is an apocalyptic number.

131680160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131680160 is an abundant number, since it is smaller than the sum of its proper divisors (179414596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131680160 is an equidigital number, since it uses as much as digits as its factorization.

131680160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823016 (or 823008 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 131680160 is about 11475.1976017845. The cubic root of 131680160 is about 508.7527641631.

The spelling of 131680160 in words is "one hundred thirty-one million, six hundred eighty thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 823001 1646002 3292004 4115005 6584008 8230010 13168016 16460020 26336032 32920040 65840080 131680160