3138438 has 32 divisors (see below), whose sum is σ = 6881760. Its totient is φ = 949760.

The previous prime is 3138403. The next prime is 3138449. The reversal of 3138438 is 8348313.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2428 + ... + 3488.

It is an arithmetic number, because the mean of its divisors is an integer number (215055).

Almost surely, 2^3138438 is an apocalyptic number.

3138438 is an abundant number, since it is smaller than the sum of its proper divisors (3743322).

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

3138438 is a wasteful number, since it uses less digits than its factorization.

3138438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its digits is 6912, while the sum is 30.

The square root of 3138438 is about 1771.5637160430. The cubic root of 3138438 is about 146.4101496442.

The spelling of 3138438 in words is "three million, one hundred thirty-eight thousand, four hundred thirty-eight".