87225788 has 24 divisors (see below), whose sum is σ = 164804640. Its totient is φ = 40155840.

The previous prime is 87225769. The next prime is 87225797. The reversal of 87225788 is 88752278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20918 + ... + 24738.

It is an arithmetic number, because the mean of its divisors is an integer number (6866860).

Almost surely, 2^87225788 is an apocalyptic number.

It is an amenable number.

87225788 is a deficient number, since it is larger than the sum of its proper divisors (77578852).

87225788 is a wasteful number, since it uses less digits than its factorization.

87225788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277 (or 4275 counting only the distinct ones).

The product of its digits is 501760, while the sum is 47.

The square root of 87225788 is about 9339.4747175631. The cubic root of 87225788 is about 443.4877557039.

The spelling of 87225788 in words is "eighty-seven million, two hundred twenty-five thousand, seven hundred eighty-eight".