3138222 has 16 divisors (see below), whose sum is σ = 6430032. Its totient is φ = 1020480.

The previous prime is 3138221. The next prime is 3138283. The reversal of 3138222 is 2228313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6133 + ... + 6624.

It is an arithmetic number, because the mean of its divisors is an integer number (401877).

Almost surely, 2^3138222 is an apocalyptic number.

3138222 is an abundant number, since it is smaller than the sum of its proper divisors (3291810).

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

3138222 is a wasteful number, since it uses less digits than its factorization.

3138222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12803.

The product of its digits is 576, while the sum is 21.

The square root of 3138222 is about 1771.5027519030. The cubic root of 3138222 is about 146.4067907209.

Subtracting from 3138222 its reverse (2228313), we obtain a palindrome (909909).

The spelling of 3138222 in words is "three million, one hundred thirty-eight thousand, two hundred twenty-two".