230728665 has 8 divisors (see below), whose sum is σ = 369165888. Its totient is φ = 123055280.

The previous prime is 230728661. The next prime is 230728681. The reversal of 230728665 is 566827032.

230728665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 230728665 - 2² = 230728661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230728661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7690941 + ... + 7690970.

It is an arithmetic number, because the mean of its divisors is an integer number (46145736).

Almost surely, 2^230728665 is an apocalyptic number.

It is an amenable number.

230728665 is a deficient number, since it is larger than the sum of its proper divisors (138437223).

230728665 is a wasteful number, since it uses less digits than its factorization.

230728665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15381919.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 230728665 is about 15189.7552646512. The cubic root of 230728665 is about 613.3389109908.

The spelling of 230728665 in words is "two hundred thirty million, seven hundred twenty-eight thousand, six hundred sixty-five".