728968408 has 16 divisors (see below), whose sum is σ = 1562075280. Its totient is φ = 312415008.

The previous prime is 728968399. The next prime is 728968433. The reversal of 728968408 is 804869827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6508591 + ... + 6508702.

It is an arithmetic number, because the mean of its divisors is an integer number (97629705).

Almost surely, 2^728968408 is an apocalyptic number.

It is an amenable number.

728968408 is an abundant number, since it is smaller than the sum of its proper divisors (833106872).

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

728968408 is a wasteful number, since it uses less digits than its factorization.

728968408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13017306 (or 13017302 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 728968408 is about 26999.4149566245. The cubic root of 728968408 is about 899.9869989891.

The spelling of 728968408 in words is "seven hundred twenty-eight million, nine hundred sixty-eight thousand, four hundred eight".