87917288 has 16 divisors (see below), whose sum is σ = 165322500. Its totient is φ = 43831296.

The previous prime is 87917281. The next prime is 87917303. The reversal of 87917288 is 88271978.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 85414564 + 2502724 = 9242^2 + 1582^2 .

It is not an unprimeable number, because it can be changed into a prime (87917281) 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 3 ways as a sum of consecutive naturals, for example, 12953 + ... + 18536.

Almost surely, 2^87917288 is an apocalyptic number.

It is an amenable number.

87917288 is a deficient number, since it is larger than the sum of its proper divisors (77405212).

87917288 is a wasteful number, since it uses less digits than its factorization.

87917288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31844 (or 31840 counting only the distinct ones).

The product of its digits is 451584, while the sum is 50.

The square root of 87917288 is about 9376.4219188345. The cubic root of 87917288 is about 444.6566184901.

The spelling of 87917288 in words is "eighty-seven million, nine hundred seventeen thousand, two hundred eighty-eight".