75245728 has 24 divisors (see below), whose sum is σ = 148363488. Its totient is φ = 37566144.

The previous prime is 75245671. The next prime is 75245741. The reversal of 75245728 is 82754257.

It is a happy 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, 26925 + ... + 29587.

It is an arithmetic number, because the mean of its divisors is an integer number (6181812).

Almost surely, 2^75245728 is an apocalyptic number.

It is an amenable number.

75245728 is a deficient number, since it is larger than the sum of its proper divisors (73117760).

75245728 is a wasteful number, since it uses less digits than its factorization.

75245728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556 (or 3548 counting only the distinct ones).

The product of its digits is 156800, while the sum is 40.

The square root of 75245728 is about 8674.4295489675. The cubic root of 75245728 is about 422.1763972838.

The spelling of 75245728 in words is "seventy-five million, two hundred forty-five thousand, seven hundred twenty-eight".