52690728 has 32 divisors (see below), whose sum is σ = 132544800. Its totient is φ = 17454528.

The previous prime is 52690711. The next prime is 52690739. The reversal of 52690728 is 82709625.

It is a happy 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, 2823 + ... + 10646.

It is an arithmetic number, because the mean of its divisors is an integer number (4142025).

Almost surely, 2^52690728 is an apocalyptic number.

It is an amenable number.

52690728 is an abundant number, since it is smaller than the sum of its proper divisors (79854072).

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

52690728 is a wasteful number, since it uses less digits than its factorization.

52690728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13641 (or 13637 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 52690728 is about 7258.8379235247. The cubic root of 52690728 is about 374.8965118876.

The spelling of 52690728 in words is "fifty-two million, six hundred ninety thousand, seven hundred twenty-eight".