728022533 has 4 divisors (see below), whose sum is σ = 832025760. Its totient is φ = 624019308.

The previous prime is 728022523. The next prime is 728022541. The reversal of 728022533 is 335220827.

728022533 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 728022533 - 2⁸ = 728022277 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 728022533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728022523) 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, 52001603 + ... + 52001616.

It is an arithmetic number, because the mean of its divisors is an integer number (208006440).

Almost surely, 2^728022533 is an apocalyptic number.

It is an amenable number.

728022533 is a deficient number, since it is larger than the sum of its proper divisors (104003227).

728022533 is a wasteful number, since it uses less digits than its factorization.

728022533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104003226.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 728022533 is about 26981.8926875043. The cubic root of 728022533 is about 899.5975702885.

The spelling of 728022533 in words is "seven hundred twenty-eight million, twenty-two thousand, five hundred thirty-three".