728203839 has 32 divisors (see below), whose sum is σ = 1094784768. Its totient is φ = 426720000.

The previous prime is 728203813. The next prime is 728203849. The reversal of 728203839 is 938302827.

It is not a de Polignac number, because 728203839 - 2⁵ = 728203807 is a prime.

It is a super-2 number, since 2×728203839² = 1060561662268675842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 728203839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728203849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140779 + ... + 145859.

It is an arithmetic number, because the mean of its divisors is an integer number (34212024).

Almost surely, 2^728203839 is an apocalyptic number.

728203839 is a deficient number, since it is larger than the sum of its proper divisors (366580929).

728203839 is a wasteful number, since it uses less digits than its factorization.

728203839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 728203839 is about 26985.2522500717. The cubic root of 728203839 is about 899.6722423817.

The spelling of 728203839 in words is "seven hundred twenty-eight million, two hundred three thousand, eight hundred thirty-nine".