52578728 has 32 divisors (see below), whose sum is σ = 104267520. Its totient is φ = 24816000.

The previous prime is 52578707. The next prime is 52578733. The reversal of 52578728 is 82787525.

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, 7583 + ... + 12753.

It is an arithmetic number, because the mean of its divisors is an integer number (3258360).

Almost surely, 2^52578728 is an apocalyptic number.

It is an amenable number.

52578728 is a deficient number, since it is larger than the sum of its proper divisors (51688792).

52578728 is a wasteful number, since it uses less digits than its factorization.

52578728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249 (or 5245 counting only the distinct ones).

The product of its digits is 313600, while the sum is 44.

The square root of 52578728 is about 7251.1190860446. The cubic root of 52578728 is about 374.6306953866.

The spelling of 52578728 in words is "fifty-two million, five hundred seventy-eight thousand, seven hundred twenty-eight".