87031628 has 24 divisors (see below), whose sum is σ = 162958320. Its totient is φ = 40547520.

The previous prime is 87031627. The next prime is 87031631. The reversal of 87031628 is 82613078.

It is not an unprimeable number, because it can be changed into a prime (87031621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4751 + ... + 14022.

It is an arithmetic number, because the mean of its divisors is an integer number (6789930).

Almost surely, 2^87031628 is an apocalyptic number.

It is an amenable number.

87031628 is a deficient number, since it is larger than the sum of its proper divisors (75926692).

87031628 is a wasteful number, since it uses less digits than its factorization.

87031628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18857 (or 18855 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 87031628 is about 9329.0743377894. The cubic root of 87031628 is about 443.1584511329.

The spelling of 87031628 in words is "eighty-seven million, thirty-one thousand, six hundred twenty-eight".