3125127728 has 20 divisors (see below), whose sum is σ = 6061819608. Its totient is φ = 1560787200.

The previous prime is 3125127721. The next prime is 3125127743. The reversal of 3125127728 is 8277215213.

It is a junction number, because it is equal to n+sod(n) for n = 3125127691 and 3125127700.

It is not an unprimeable number, because it can be changed into a prime (3125127721) 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, 96473 + ... + 124728.

Almost surely, 2^3125127728 is an apocalyptic number.

It is an amenable number.

3125127728 is a deficient number, since it is larger than the sum of its proper divisors (2936691880).

3125127728 is a wasteful number, since it uses less digits than its factorization.

3125127728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222092 (or 222086 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 3125127728 is about 55902.8418597838. The cubic root of 3125127728 is about 1462.0287877117.

The spelling of 3125127728 in words is "three billion, one hundred twenty-five million, one hundred twenty-seven thousand, seven hundred twenty-eight".