728345292 has 48 divisors (see below), whose sum is σ = 1734802272. Its totient is φ = 237752320.

The previous prime is 728345287. The next prime is 728345357. The reversal of 728345292 is 292543827.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597868 + ... + 599084.

It is an arithmetic number, because the mean of its divisors is an integer number (36141714).

Almost surely, 2^728345292 is an apocalyptic number.

It is an amenable number.

728345292 is an abundant number, since it is smaller than the sum of its proper divisors (1006456980).

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

728345292 is a wasteful number, since it uses less digits than its factorization.

728345292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218 (or 2216 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 728345292 is about 26987.8730543924. The cubic root of 728345292 is about 899.7304921426.

The spelling of 728345292 in words is "seven hundred twenty-eight million, three hundred forty-five thousand, two hundred ninety-two".