656252928 has 280 divisors, whose sum is σ = 2093354208. Its totient is φ = 204374016.

The previous prime is 656252917. The next prime is 656252939. The reversal of 656252928 is 829252656.

656252928 is a `hidden beast` number, since 65 + 62 + 529 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (656252917) and next prime (656252939).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15261675 + ... + 15261717.

Almost surely, 2^656252928 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 656252928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1046677104).

656252928 is an abundant number, since it is smaller than the sum of its proper divisors (1437101280).

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

656252928 is an equidigital number, since it uses as much as digits as its factorization.

656252928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 71 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 656252928 is about 25617.4340635435. The cubic root of 656252928 is about 869.0079536395.

The spelling of 656252928 in words is "six hundred fifty-six million, two hundred fifty-two thousand, nine hundred twenty-eight".