728624312 has 32 divisors (see below), whose sum is σ = 1548699600. Its totient is φ = 318587904.

The previous prime is 728624287. The next prime is 728624329. The reversal of 728624312 is 213426827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182393 + ... + 186344.

Almost surely, 2^728624312 is an apocalyptic number.

It is an amenable number.

728624312 is an abundant number, since it is smaller than the sum of its proper divisors (820075288).

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

728624312 is a wasteful number, since it uses less digits than its factorization.

728624312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368775 (or 368771 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 728624312 is about 26993.0419182426. The cubic root of 728624312 is about 899.8453693189.

The spelling of 728624312 in words is "seven hundred twenty-eight million, six hundred twenty-four thousand, three hundred twelve".