728830533 has 4 divisors (see below), whose sum is σ = 971774048. Its totient is φ = 485887020.

The previous prime is 728830517. The next prime is 728830561. The reversal of 728830533 is 335038827.

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 not a de Polignac number, because 728830533 - 2⁴ = 728830517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728830491 and 728830500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728830573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121471753 + ... + 121471758.

It is an arithmetic number, because the mean of its divisors is an integer number (242943512).

Almost surely, 2^728830533 is an apocalyptic number.

It is an amenable number.

728830533 is a deficient number, since it is larger than the sum of its proper divisors (242943515).

728830533 is a wasteful number, since it uses less digits than its factorization.

728830533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242943514.

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

The square root of 728830533 is about 26996.8615398161. The cubic root of 728830533 is about 899.9302550891.

The spelling of 728830533 in words is "seven hundred twenty-eight million, eight hundred thirty thousand, five hundred thirty-three".