75074728 has 8 divisors (see below), whose sum is σ = 140765130. Its totient is φ = 37537360.

The previous prime is 75074717. The next prime is 75074749. The reversal of 75074728 is 82747057.

It can be written as a sum of positive squares in only one way, i.e., 74615044 + 459684 = 8638^2 + 678^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4692163 + ... + 4692178.

Almost surely, 2^75074728 is an apocalyptic number.

It is an amenable number.

75074728 is a deficient number, since it is larger than the sum of its proper divisors (65690402).

75074728 is a wasteful number, since it uses less digits than its factorization.

75074728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9384347 (or 9384343 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 75074728 is about 8664.5673867770. The cubic root of 75074728 is about 421.8563484612.

The spelling of 75074728 in words is "seventy-five million, seventy-four thousand, seven hundred twenty-eight".