87958840 has 32 divisors (see below), whose sum is σ = 198197280. Its totient is φ = 35132032.

The previous prime is 87958823. The next prime is 87958883. The reversal of 87958840 is 4885978.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 38202 + ... + 40438.

It is an arithmetic number, because the mean of its divisors is an integer number (6193665).

Almost surely, 2^87958840 is an apocalyptic number.

It is an amenable number.

87958840 is an abundant number, since it is smaller than the sum of its proper divisors (110238440).

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

87958840 is a wasteful number, since it uses less digits than its factorization.

87958840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231 (or 3227 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 87958840 is about 9378.6374276864. The cubic root of 87958840 is about 444.7266595563.

The spelling of 87958840 in words is "eighty-seven million, nine hundred fifty-eight thousand, eight hundred forty".