232430728 has 16 divisors (see below), whose sum is σ = 439807500. Its totient is φ = 115148736.

The previous prime is 232430713. The next prime is 232430741. The reversal of 232430728 is 827034232.

232430728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 228674884 + 3755844 = 15122^2 + 1938^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 232430728.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132403 + ... + 134146.

Almost surely, 2^232430728 is an apocalyptic number.

It is an amenable number.

232430728 is a deficient number, since it is larger than the sum of its proper divisors (207376772).

232430728 is a wasteful number, since it uses less digits than its factorization.

232430728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266664 (or 266660 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 232430728 is about 15245.6789943905. The cubic root of 232430728 is about 614.8433981156.

The spelling of 232430728 in words is "two hundred thirty-two million, four hundred thirty thousand, seven hundred twenty-eight".