3138128 has 20 divisors (see below), whose sum is σ = 6948960. Its totient is φ = 1344864.

The previous prime is 3138127. The next prime is 3138131. The reversal of 3138128 is 8218313.

3138128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3138097 and 3138106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138127) by changing a digit.

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, 13898 + ... + 14121.

It is an arithmetic number, because the mean of its divisors is an integer number (347448).

Almost surely, 2^3138128 is an apocalyptic number.

It is an amenable number.

3138128 is an abundant number, since it is smaller than the sum of its proper divisors (3810832).

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

3138128 is a wasteful number, since it uses less digits than its factorization.

3138128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28034 (or 28028 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 3138128 is about 1771.4762205573. The cubic root of 3138128 is about 146.4053289191.

The spelling of 3138128 in words is "three million, one hundred thirty-eight thousand, one hundred twenty-eight".