3128712 has 16 divisors (see below), whose sum is σ = 7821840. Its totient is φ = 1042896.

The previous prime is 3128701. The next prime is 3128729. The reversal of 3128712 is 2178213.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 130363 = 3128712 / (3 + 1 + 2 + 8 + 7 + 1 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65158 + ... + 65205.

It is an arithmetic number, because the mean of its divisors is an integer number (488865).

Almost surely, 2^3128712 is an apocalyptic number.

It is an amenable number.

3128712 is an abundant number, since it is smaller than the sum of its proper divisors (4693128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3128712 is a wasteful number, since it uses less digits than its factorization.

3128712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130372 (or 130368 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 3128712 is about 1768.8165535182. The cubic root of 3128712 is about 146.2587517591.

The spelling of 3128712 in words is "three million, one hundred twenty-eight thousand, seven hundred twelve".