87045880 has 32 divisors (see below), whose sum is σ = 200024640. Its totient is φ = 34076800.

The previous prime is 87045863. The next prime is 87045883. The reversal of 87045880 is 8854078.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87045883) 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, 21271 + ... + 25030.

It is an arithmetic number, because the mean of its divisors is an integer number (6250770).

Almost surely, 2^87045880 is an apocalyptic number.

It is an amenable number.

87045880 is an abundant number, since it is smaller than the sum of its proper divisors (112978760).

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

87045880 is a wasteful number, since it uses less digits than its factorization.

87045880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46359 (or 46355 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 87045880 is about 9329.8381550807. The cubic root of 87045880 is about 443.1826398471.

The spelling of 87045880 in words is "eighty-seven million, forty-five thousand, eight hundred eighty".