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131057898 = 2376128703
BaseRepresentation
bin1111100111111…
…00100011101010
3100010121102122020
413303330203222
5232022323043
621001005310
73150654666
oct763744352
9303542566
10131057898
1167a84814
1237a83836
13211c916a
14135978a6
15b78be83
hex7cfc8ea

131057898 has 16 divisors (see below), whose sum is σ = 262469376. Its totient is φ = 43627040.

The previous prime is 131057891. The next prime is 131057909. The reversal of 131057898 is 898750131.

It is not an unprimeable number, because it can be changed into a prime (131057891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9786 + ... + 18917.

It is an arithmetic number, because the mean of its divisors is an integer number (16404336).

Almost surely, 2131057898 is an apocalyptic number.

131057898 is an abundant number, since it is smaller than the sum of its proper divisors (131411478).

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

131057898 is a wasteful number, since it uses less digits than its factorization.

131057898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29469.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 131057898 is about 11448.0521487282. The cubic root of 131057898 is about 507.9501185858.

The spelling of 131057898 in words is "one hundred thirty-one million, fifty-seven thousand, eight hundred ninety-eight".

Divisors: 1 2 3 6 761 1522 2283 4566 28703 57406 86109 172218 21842983 43685966 65528949 131057898