87132180 has 24 divisors (see below), whose sum is σ = 243970272. Its totient is φ = 23235232.

The previous prime is 87132179. The next prime is 87132209. The reversal of 87132180 is 8123178.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 726042 + ... + 726161.

It is an arithmetic number, because the mean of its divisors is an integer number (10165428).

Almost surely, 2^87132180 is an apocalyptic number.

It is an amenable number.

87132180 is an abundant number, since it is smaller than the sum of its proper divisors (156838092).

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

87132180 is a wasteful number, since it uses less digits than its factorization.

87132180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452215 (or 1452213 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 87132180 is about 9334.4619555709. The cubic root of 87132180 is about 443.3290531681.

The spelling of 87132180 in words is "eighty-seven million, one hundred thirty-two thousand, one hundred eighty".