87420928 has 52 divisors (see below), whose sum is σ = 199860400. Its totient is φ = 37453824.

The previous prime is 87420911. The next prime is 87420947. The reversal of 87420928 is 82902478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27148 + ... + 30196.

Almost surely, 2^87420928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87420928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99930200).

87420928 is an abundant number, since it is smaller than the sum of its proper divisors (112439472).

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

87420928 is an equidigital number, since it uses as much as digits as its factorization.

87420928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080 (or 3058 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 87420928 is about 9349.9159354510. The cubic root of 87420928 is about 443.8182303866.

The spelling of 87420928 in words is "eighty-seven million, four hundred twenty thousand, nine hundred twenty-eight".