3128812 has 12 divisors (see below), whose sum is σ = 5565616. Its totient is φ = 1538640.

The previous prime is 3128803. The next prime is 3128813. The reversal of 3128812 is 2188213.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3128813) 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, 6168 + ... + 6655.

Almost surely, 2^3128812 is an apocalyptic number.

It is an amenable number.

3128812 is a deficient number, since it is larger than the sum of its proper divisors (2436804).

3128812 is a wasteful number, since it uses less digits than its factorization.

3128812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12888 (or 12886 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 3128812 is about 1768.8448207799. The cubic root of 3128812 is about 146.2603099849.

The spelling of 3128812 in words is "three million, one hundred twenty-eight thousand, eight hundred twelve".