87551928 has 96 divisors (see below), whose sum is σ = 254545200. Its totient is φ = 28159488.

The previous prime is 87551927. The next prime is 87551983. The reversal of 87551928 is 82915578.

It is a happy number.

87551928 is a `hidden beast` number, since 8 + 7 + 551 + 92 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87551923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55600 + ... + 57152.

Almost surely, 2^87551928 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 87551928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127272600).

87551928 is an abundant number, since it is smaller than the sum of its proper divisors (166993272).

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

87551928 is a wasteful number, since it uses less digits than its factorization.

87551928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603 (or 1587 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 87551928 is about 9356.9187235970. The cubic root of 87551928 is about 444.0398065114.

The spelling of 87551928 in words is "eighty-seven million, five hundred fifty-one thousand, nine hundred twenty-eight".