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131794988 = 22132194963
BaseRepresentation
bin1111101101100…
…00100000101100
3100011222212201212
413312300200230
5232214414423
621024453552
73160144643
oct766604054
9304885655
10131794988
1168438586
123817a2b8
13213c6800
141370a35a
15b885578
hex7db082c

131794988 has 18 divisors (see below), whose sum is σ = 249748884. Its totient is φ = 60828144.

The previous prime is 131794987. The next prime is 131795009. The reversal of 131794988 is 889497131.

It is not an unprimeable number, because it can be changed into a prime (131794987) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 96806 + ... + 98157.

It is an arithmetic number, because the mean of its divisors is an integer number (13874938).

Almost surely, 2131794988 is an apocalyptic number.

It is an amenable number.

131794988 is a deficient number, since it is larger than the sum of its proper divisors (117953896).

131794988 is a wasteful number, since it uses less digits than its factorization.

131794988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194993 (or 194978 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 131794988 is about 11480.1998240449. The cubic root of 131794988 is about 508.9006024041.

The spelling of 131794988 in words is "one hundred thirty-one million, seven hundred ninety-four thousand, nine hundred eighty-eight".

Divisors: 1 2 4 13 26 52 169 338 676 194963 389926 779852 2534519 5069038 10138076 32948747 65897494 131794988