728837233 has 4 divisors (see below), whose sum is σ = 734401008. Its totient is φ = 723273460.

The previous prime is 728837227. The next prime is 728837297. The reversal of 728837233 is 332738827.

728837233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 728837233 - 2⁵ = 728837201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728837233.

It is not an unprimeable number, because it can be changed into a prime (728837203) 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, 2781691 + ... + 2781952.

It is an arithmetic number, because the mean of its divisors is an integer number (183600252).

Almost surely, 2^728837233 is an apocalyptic number.

It is an amenable number.

728837233 is a deficient number, since it is larger than the sum of its proper divisors (5563775).

728837233 is a wasteful number, since it uses less digits than its factorization.

728837233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5563774.

The product of its digits is 338688, while the sum is 43.

The square root of 728837233 is about 26996.9856280289. The cubic root of 728837233 is about 899.9330127097.

It can be divided in two parts, 7288 and 37233, that added together give a square (44521 = 211²).

The spelling of 728837233 in words is "seven hundred twenty-eight million, eight hundred thirty-seven thousand, two hundred thirty-three".