87231156 has 24 divisors (see below), whose sum is σ = 204909600. Its totient is φ = 28881312.

The previous prime is 87231143. The next prime is 87231167. The reversal of 87231156 is 65113278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22606 + ... + 26181.

It is an arithmetic number, because the mean of its divisors is an integer number (8537900).

Almost surely, 2^87231156 is an apocalyptic number.

It is an amenable number.

87231156 is an abundant number, since it is smaller than the sum of its proper divisors (117678444).

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

87231156 is a wasteful number, since it uses less digits than its factorization.

87231156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48943 (or 48941 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 87231156 is about 9339.7620954712. The cubic root of 87231156 is about 443.4968531413.

The spelling of 87231156 in words is "eighty-seven million, two hundred thirty-one thousand, one hundred fifty-six".