87431692 has 12 divisors (see below), whose sum is σ = 161058520. Its totient is φ = 41414976.

The previous prime is 87431683. The next prime is 87431699. The reversal of 87431692 is 29613478.

It is a super-3 number, since 3×87431692³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (87431699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575133 + ... + 575284.

Almost surely, 2^87431692 is an apocalyptic number.

It is an amenable number.

87431692 is a deficient number, since it is larger than the sum of its proper divisors (73626828).

87431692 is a wasteful number, since it uses less digits than its factorization.

87431692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150440 (or 1150438 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 87431692 is about 9350.4915378818. The cubic root of 87431692 is about 443.8364451836.

The spelling of 87431692 in words is "eighty-seven million, four hundred thirty-one thousand, six hundred ninety-two".