87890328 has 24 divisors (see below), whose sum is σ = 238036500. Its totient is φ = 29296752.

The previous prime is 87890317. The next prime is 87890339. The reversal of 87890328 is 82309878.

It is an interprime number because it is at equal distance from previous prime (87890317) and next prime (87890339).

It is a tau number, because it is divible by the number of its divisors (24).

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 5 ways as a sum of consecutive naturals, for example, 610278 + ... + 610421.

Almost surely, 2^87890328 is an apocalyptic number.

It is an amenable number.

87890328 is an abundant number, since it is smaller than the sum of its proper divisors (150146172).

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

87890328 is a wasteful number, since it uses less digits than its factorization.

87890328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220711 (or 1220704 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 87890328 is about 9374.9841599866. The cubic root of 87890328 is about 444.6111622501.

The spelling of 87890328 in words is "eighty-seven million, eight hundred ninety thousand, three hundred twenty-eight".