230512728 has 16 divisors (see below), whose sum is σ = 576281880. Its totient is φ = 76837568.

The previous prime is 230512699. The next prime is 230512729. The reversal of 230512728 is 827215032.

It is a super-2 number, since 2×230512728² = 106272235540003968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 230512695 and 230512704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230512729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4802325 + ... + 4802372.

Almost surely, 2^230512728 is an apocalyptic number.

It is an amenable number.

230512728 is an abundant number, since it is smaller than the sum of its proper divisors (345769152).

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

230512728 is a wasteful number, since it uses less digits than its factorization.

230512728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604706 (or 9604702 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 230512728 is about 15182.6456192589. The cubic root of 230512728 is about 613.1475117077.

The spelling of 230512728 in words is "two hundred thirty million, five hundred twelve thousand, seven hundred twenty-eight".