87657828 has 24 divisors (see below), whose sum is σ = 204882720. Its totient is φ = 29169600.

The previous prime is 87657827. The next prime is 87657839. The reversal of 87657828 is 82875678.

It is not an unprimeable number, because it can be changed into a prime (87657827) 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 7 ways as a sum of consecutive naturals, for example, 1528 + ... + 13328.

It is an arithmetic number, because the mean of its divisors is an integer number (8536780).

Almost surely, 2^87657828 is an apocalyptic number.

It is an amenable number.

87657828 is an abundant number, since it is smaller than the sum of its proper divisors (117224892).

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

87657828 is a wasteful number, since it uses less digits than its factorization.

87657828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12427 (or 12425 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 51.

The square root of 87657828 is about 9362.5759275960. The cubic root of 87657828 is about 444.2187664720.

The spelling of 87657828 in words is "eighty-seven million, six hundred fifty-seven thousand, eight hundred twenty-eight".