75728872 has 16 divisors (see below), whose sum is σ = 142179300. Its totient is φ = 37814400.

The previous prime is 75728867. The next prime is 75728879. The reversal of 75728872 is 27882757.

It can be written as a sum of positive squares in 2 ways, for example, as 66031876 + 9696996 = 8126^2 + 3114^2 .

It is not an unprimeable number, because it can be changed into a prime (75728879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622 + ... + 12322.

Almost surely, 2^75728872 is an apocalyptic number.

It is an amenable number.

75728872 is a deficient number, since it is larger than the sum of its proper divisors (66450428).

75728872 is a wasteful number, since it uses less digits than its factorization.

75728872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12516 (or 12512 counting only the distinct ones).

The product of its digits is 439040, while the sum is 46.

The square root of 75728872 is about 8702.2337362312. The cubic root of 75728872 is about 423.0780519436.

The spelling of 75728872 in words is "seventy-five million, seven hundred twenty-eight thousand, eight hundred seventy-two".