728875233 has 8 divisors (see below), whose sum is σ = 1079815200. Its totient is φ = 485916804.

The previous prime is 728875229. The next prime is 728875237. The reversal of 728875233 is 332578827.

It is an interprime number because it is at equal distance from previous prime (728875229) and next prime (728875237).

It is not a de Polignac number, because 728875233 - 2² = 728875229 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (728875237) 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, 13497663 + ... + 13497716.

It is an arithmetic number, because the mean of its divisors is an integer number (134976900).

Almost surely, 2^728875233 is an apocalyptic number.

It is an amenable number.

728875233 is a deficient number, since it is larger than the sum of its proper divisors (350939967).

728875233 is a wasteful number, since it uses less digits than its factorization.

728875233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26995388 (or 26995382 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 728875233 is about 26997.6894011321. The cubic root of 728875233 is about 899.9486526261.

The spelling of 728875233 in words is "seven hundred twenty-eight million, eight hundred seventy-five thousand, two hundred thirty-three".