87906128 has 30 divisors (see below), whose sum is σ = 172213866. Its totient is φ = 43468096.

The previous prime is 87906097. The next prime is 87906131. The reversal of 87906128 is 82160978.

It can be written as a sum of positive squares in only one way, i.e., 87459904 + 446224 = 9352^2 + 668^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 446126 + ... + 446322.

Almost surely, 2^87906128 is an apocalyptic number.

It is an amenable number.

87906128 is a deficient number, since it is larger than the sum of its proper divisors (84307738).

87906128 is a wasteful number, since it uses less digits than its factorization.

87906128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 87906128 is about 9375.8267902090. The cubic root of 87906128 is about 444.6378031620.

The spelling of 87906128 in words is "eighty-seven million, nine hundred six thousand, one hundred twenty-eight".