3138628 has 12 divisors (see below), whose sum is σ = 5521600. Its totient is φ = 1561032.

The previous prime is 3138601. The next prime is 3138637. The reversal of 3138628 is 8268313.

3138628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3138628.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176 + ... + 2767.

Almost surely, 2^3138628 is an apocalyptic number.

It is an amenable number.

3138628 is a deficient number, since it is larger than the sum of its proper divisors (2382972).

3138628 is a wasteful number, since it uses less digits than its factorization.

3138628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146 (or 4144 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 3138628 is about 1771.6173401725. The cubic root of 3138628 is about 146.4131041253.

The spelling of 3138628 in words is "three million, one hundred thirty-eight thousand, six hundred twenty-eight".