87973180 has 48 divisors (see below), whose sum is σ = 188578656. Its totient is φ = 34467840.

The previous prime is 87973177. The next prime is 87973187. The reversal of 87973180 is 8137978.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87973187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265615 + ... + 265945.

It is an arithmetic number, because the mean of its divisors is an integer number (3928722).

Almost surely, 2^87973180 is an apocalyptic number.

It is an amenable number.

87973180 is an abundant number, since it is smaller than the sum of its proper divisors (100605476).

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

87973180 is a wasteful number, since it uses less digits than its factorization.

87973180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 87973180 is about 9379.4018999081. The cubic root of 87973180 is about 444.7508262906.

The spelling of 87973180 in words is "eighty-seven million, nine hundred seventy-three thousand, one hundred eighty".