728025239 has 4 divisors (see below), whose sum is σ = 728147640. Its totient is φ = 727902840.

The previous prime is 728025227. The next prime is 728025247. The reversal of 728025239 is 932520827.

728025239 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728025239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728045239) 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, 51797 + ... + 64334.

It is an arithmetic number, because the mean of its divisors is an integer number (182036910).

Almost surely, 2^728025239 is an apocalyptic number.

728025239 is a deficient number, since it is larger than the sum of its proper divisors (122401).

728025239 is a wasteful number, since it uses less digits than its factorization.

728025239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122400.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 728025239 is about 26981.9428321980. The cubic root of 728025239 is about 899.5986848639.

The spelling of 728025239 in words is "seven hundred twenty-eight million, twenty-five thousand, two hundred thirty-nine".