3138885 has 16 divisors (see below), whose sum is σ = 5580480. Its totient is φ = 1674000.

The previous prime is 3138881. The next prime is 3138893. The reversal of 3138885 is 5888313.

It is a happy number.

It is not a de Polignac number, because 3138885 - 2² = 3138881 is a prime.

3138885 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138881) by changing a digit.

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, 11491 + ... + 11760.

It is an arithmetic number, because the mean of its divisors is an integer number (348780).

Almost surely, 2^3138885 is an apocalyptic number.

It is an amenable number.

3138885 is a deficient number, since it is larger than the sum of its proper divisors (2441595).

3138885 is a wasteful number, since it uses less digits than its factorization.

3138885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23265 (or 23259 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 3138885 is about 1771.6898712811. The cubic root of 3138885 is about 146.4171002600.

The spelling of 3138885 in words is "three million, one hundred thirty-eight thousand, eight hundred eighty-five".