87931936 has 12 divisors (see below), whose sum is σ = 173116062. Its totient is φ = 43965952.

The previous prime is 87931853. The next prime is 87931951. The reversal of 87931936 is 63913978.

It can be written as a sum of positive squares in only one way, i.e., 51208336 + 36723600 = 7156^2 + 6060^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1373905 + ... + 1373968.

Almost surely, 2^87931936 is an apocalyptic number.

It is an amenable number.

87931936 is a deficient number, since it is larger than the sum of its proper divisors (85184126).

87931936 is a wasteful number, since it uses less digits than its factorization.

87931936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747883 (or 2747875 counting only the distinct ones).

The product of its digits is 244944, while the sum is 46.

The square root of 87931936 is about 9377.2029944968. The cubic root of 87931936 is about 444.6813120348.

The spelling of 87931936 in words is "eighty-seven million, nine hundred thirty-one thousand, nine hundred thirty-six".