87992370 has 24 divisors (see below), whose sum is σ = 228780396. Its totient is φ = 23464608.

The previous prime is 87992369. The next prime is 87992393. The reversal of 87992370 is 7329978.

It can be written as a sum of positive squares in 2 ways, for example, as 82246761 + 5745609 = 9069^2 + 2397^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 488757 + ... + 488936.

Almost surely, 2^87992370 is an apocalyptic number.

87992370 is an abundant number, since it is smaller than the sum of its proper divisors (140788026).

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

87992370 is a wasteful number, since it uses less digits than its factorization.

87992370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977706 (or 977703 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 87992370 is about 9380.4248304648. The cubic root of 87992370 is about 444.7831624635.

The spelling of 87992370 in words is "eighty-seven million, nine hundred ninety-two thousand, three hundred seventy".