87591828 has 24 divisors (see below), whose sum is σ = 208238688. Its totient is φ = 28646176.

The previous prime is 87591821. The next prime is 87591841. The reversal of 87591828 is 82819578.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87591821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68226 + ... + 69497.

It is an arithmetic number, because the mean of its divisors is an integer number (8676612).

Almost surely, 2^87591828 is an apocalyptic number.

It is an amenable number.

87591828 is an abundant number, since it is smaller than the sum of its proper divisors (120646860).

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

87591828 is a wasteful number, since it uses less digits than its factorization.

87591828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137783 (or 137781 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The square root of 87591828 is about 9359.0505928753. The cubic root of 87591828 is about 444.1072502862.

The spelling of 87591828 in words is "eighty-seven million, five hundred ninety-one thousand, eight hundred twenty-eight".