745335728 has 40 divisors (see below), whose sum is σ = 1542103680. Its totient is φ = 348203520.

The previous prime is 745335623. The next prime is 745335739. The reversal of 745335728 is 827533547.

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, 11525 + ... + 40292.

It is an arithmetic number, because the mean of its divisors is an integer number (38552592).

Almost surely, 2^745335728 is an apocalyptic number.

It is an amenable number.

745335728 is an abundant number, since it is smaller than the sum of its proper divisors (796767952).

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

745335728 is a wasteful number, since it uses less digits than its factorization.

745335728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51885 (or 51879 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

The square root of 745335728 is about 27300.8374963114. The cubic root of 745335728 is about 906.6729240725.

The spelling of 745335728 in words is "seven hundred forty-five million, three hundred thirty-five thousand, seven hundred twenty-eight".