728933 has 4 divisors (see below), whose sum is σ = 738240. Its totient is φ = 719628.

The previous prime is 728929. The next prime is 728941. The reversal of 728933 is 339827.

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 728933 - 2² = 728929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 728933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728953) 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, 4535 + ... + 4692.

It is an arithmetic number, because the mean of its divisors is an integer number (184560).

2⁷²⁸⁹³³ is an apocalyptic number.

It is an amenable number.

728933 is a deficient number, since it is larger than the sum of its proper divisors (9307).

728933 is an equidigital number, since it uses as much as digits as its factorization.

728933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9306.

The product of its digits is 9072, while the sum is 32.

The square root of 728933 is about 853.7757316767. The cubic root of 728933 is about 89.9972427139.

It can be divided in two parts, 728 and 933, that added together give a palindrome (1661).

The spelling of 728933 in words is "seven hundred twenty-eight thousand, nine hundred thirty-three".