728457296 has 20 divisors (see below), whose sum is σ = 1613012832. Its totient is φ = 312195936.

The previous prime is 728457287. The next prime is 728457337. The reversal of 728457296 is 692754827.

It is a congruent number.

It is an unprimeable number.

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, 3251930 + ... + 3252153.

Almost surely, 2^728457296 is an apocalyptic number.

It is an amenable number.

728457296 is an abundant number, since it is smaller than the sum of its proper divisors (884555536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728457296 is a wasteful number, since it uses less digits than its factorization.

728457296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6504098 (or 6504092 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The square root of 728457296 is about 26989.9480547851. The cubic root of 728457296 is about 899.7766095771.

The spelling of 728457296 in words is "seven hundred twenty-eight million, four hundred fifty-seven thousand, two hundred ninety-six".