87192120 has 32 divisors (see below), whose sum is σ = 261576720. Its totient is φ = 23251200.

The previous prime is 87192109. The next prime is 87192137. The reversal of 87192120 is 2129178.

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, 363181 + ... + 363420.

Almost surely, 2^87192120 is an apocalyptic number.

It is an amenable number.

87192120 is an abundant number, since it is smaller than the sum of its proper divisors (174384600).

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

87192120 is a wasteful number, since it uses less digits than its factorization.

87192120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726615 (or 726611 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 87192120 is about 9337.6720867677. The cubic root of 87192120 is about 443.4306882256.

The spelling of 87192120 in words is "eighty-seven million, one hundred ninety-two thousand, one hundred twenty".