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131680572 = 22317645493
BaseRepresentation
bin1111101100101…
…00100100111100
3100011210001210020
413312110210330
5232202234242
621022212140
73156160242
oct766244474
9304701706
10131680572
116836a621
1238124050
13213866ca
14136ba792
15b8616ec
hex7d9493c

131680572 has 24 divisors (see below), whose sum is σ = 325328976. Its totient is φ = 41311488.

The previous prime is 131680559. The next prime is 131680603. The reversal of 131680572 is 275086131.

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, 322543 + ... + 322950.

It is an arithmetic number, because the mean of its divisors is an integer number (13555374).

Almost surely, 2131680572 is an apocalyptic number.

131680572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131680572 is an abundant number, since it is smaller than the sum of its proper divisors (193648404).

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

131680572 is a wasteful number, since it uses less digits than its factorization.

131680572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645517 (or 645515 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 131680572 is about 11475.2155535310. The cubic root of 131680572 is about 508.7532947566.

The spelling of 131680572 in words is "one hundred thirty-one million, six hundred eighty thousand, five hundred seventy-two".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 645493 1290986 1936479 2581972 3872958 7745916 10973381 21946762 32920143 43893524 65840286 131680572