75008728 has 16 divisors (see below), whose sum is σ = 140981760. Its totient is φ = 37413600.

The previous prime is 75008701. The next prime is 75008771. The reversal of 75008728 is 82780057.

It is a super-3 number, since 3×75008728³ (a number of 25 digits) contains 333 as substring.

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, 7768 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (8811360).

Almost surely, 2^75008728 is an apocalyptic number.

It is an amenable number.

75008728 is a deficient number, since it is larger than the sum of its proper divisors (65973032).

75008728 is a wasteful number, since it uses less digits than its factorization.

75008728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22698 (or 22694 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 75008728 is about 8660.7579344997. The cubic root of 75008728 is about 421.7326908615.

The spelling of 75008728 in words is "seventy-five million, eight thousand, seven hundred twenty-eight".