87998470 has 64 divisors (see below), whose sum is σ = 190356480. Its totient is φ = 28651392.

The previous prime is 87998467. The next prime is 87998489. The reversal of 87998470 is 7489978.

It is a happy number.

Together with 102358010 it forms an amicable pair .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135687 + ... + 136333.

It is an arithmetic number, because the mean of its divisors is an integer number (2974320).

Almost surely, 2^87998470 is an apocalyptic number.

87998470 is an abundant number, since it is smaller than the sum of its proper divisors (102358010).

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

87998470 is a wasteful number, since it uses less digits than its factorization.

87998470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 87998470 is about 9380.7499700184. The cubic root of 87998470 is about 444.7934403038.

The spelling of 87998470 in words is "eighty-seven million, nine hundred ninety-eight thousand, four hundred seventy".