87157828 has 12 divisors (see below), whose sum is σ = 152832960. Its totient is φ = 43491272.

The previous prime is 87157753. The next prime is 87157859. The reversal of 87157828 is 82875178.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19648 + ... + 23671.

It is an arithmetic number, because the mean of its divisors is an integer number (12736080).

Almost surely, 2^87157828 is an apocalyptic number.

It is an amenable number.

87157828 is a deficient number, since it is larger than the sum of its proper divisors (65675132).

87157828 is a wasteful number, since it uses less digits than its factorization.

87157828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43826 (or 43824 counting only the distinct ones).

The product of its digits is 250880, while the sum is 46.

The square root of 87157828 is about 9335.8356883570. The cubic root of 87157828 is about 443.3725479599.

The spelling of 87157828 in words is "eighty-seven million, one hundred fifty-seven thousand, eight hundred twenty-eight".