3129872 has 20 divisors (see below), whose sum is σ = 6100800. Its totient is φ = 1555488.

The previous prime is 3129859. The next prime is 3129911. The reversal of 3129872 is 2789213.

3129872 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 2693 + ... + 3675.

It is an arithmetic number, because the mean of its divisors is an integer number (305040).

Almost surely, 2^3129872 is an apocalyptic number.

It is an amenable number.

3129872 is a deficient number, since it is larger than the sum of its proper divisors (2970928).

3129872 is a wasteful number, since it uses less digits than its factorization.

3129872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190 (or 1184 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 3129872 is about 1769.1444259868. The cubic root of 3129872 is about 146.2768251376.

The spelling of 3129872 in words is "three million, one hundred twenty-nine thousand, eight hundred seventy-two".