87971896 has 16 divisors (see below), whose sum is σ = 168971040. Its totient is φ = 42912960.

The previous prime is 87971839. The next prime is 87971927. The reversal of 87971896 is 69817978.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 133776 + ... + 134431.

It is an arithmetic number, because the mean of its divisors is an integer number (10560690).

Almost surely, 2^87971896 is an apocalyptic number.

It is an amenable number.

87971896 is a deficient number, since it is larger than the sum of its proper divisors (80999144).

87971896 is a wasteful number, since it uses less digits than its factorization.

87971896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268254 (or 268250 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 55.

The square root of 87971896 is about 9379.3334517971. Note that the first 3 decimals coincide. The cubic root of 87971896 is about 444.7486625144.

The spelling of 87971896 in words is "eighty-seven million, nine hundred seventy-one thousand, eight hundred ninety-six".