87287788 has 12 divisors (see below), whose sum is σ = 174575632. Its totient is φ = 37409040.

The previous prime is 87287777. The next prime is 87287791. The reversal of 87287788 is 88778278.

87287788 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558683 + ... + 1558738.

Almost surely, 2^87287788 is an apocalyptic number.

It is an amenable number.

87287788 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87287788 is a wasteful number, since it uses less digits than its factorization.

87287788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117432 (or 3117430 counting only the distinct ones).

The product of its digits is 2809856, while the sum is 55.

The square root of 87287788 is about 9342.7933724342. The cubic root of 87287788 is about 443.5928076970.

The spelling of 87287788 in words is "eighty-seven million, two hundred eighty-seven thousand, seven hundred eighty-eight".