87430872 has 32 divisors (see below), whose sum is σ = 221215680. Its totient is φ = 28791840.

The previous prime is 87430793. The next prime is 87430879. The reversal of 87430872 is 27803478.

It is a self number, because there is not a number n which added to its sum of digits gives 87430872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87430879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19954 + ... + 23937.

It is an arithmetic number, because the mean of its divisors is an integer number (6912990).

Almost surely, 2^87430872 is an apocalyptic number.

It is an amenable number.

87430872 is an abundant number, since it is smaller than the sum of its proper divisors (133784808).

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

87430872 is a wasteful number, since it uses less digits than its factorization.

87430872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43983 (or 43979 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 87430872 is about 9350.4476898168. The cubic root of 87430872 is about 443.8350576355.

The spelling of 87430872 in words is "eighty-seven million, four hundred thirty thousand, eight hundred seventy-two".