745022728 has 16 divisors (see below), whose sum is σ = 1397826000. Its totient is φ = 372269136.

The previous prime is 745022701. The next prime is 745022741. The reversal of 745022728 is 827220547.

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, 16858 + ... + 42121.

It is an arithmetic number, because the mean of its divisors is an integer number (87364125).

Almost surely, 2^745022728 is an apocalyptic number.

It is an amenable number.

745022728 is a deficient number, since it is larger than the sum of its proper divisors (652803272).

745022728 is a wasteful number, since it uses less digits than its factorization.

745022728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60564 (or 60560 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 745022728 is about 27295.1044694832. The cubic root of 745022728 is about 906.5459887202.

The spelling of 745022728 in words is "seven hundred forty-five million, twenty-two thousand, seven hundred twenty-eight".