22131238 has 16 divisors (see below), whose sum is σ = 35277120. Its totient is φ = 10383336.

The previous prime is 22131223. The next prime is 22131259. The reversal of 22131238 is 83213122.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1345 + ... + 6787.

It is an arithmetic number, because the mean of its divisors is an integer number (2204820).

Almost surely, 2^22131238 is an apocalyptic number.

22131238 is a deficient number, since it is larger than the sum of its proper divisors (13145882).

22131238 is a wasteful number, since it uses less digits than its factorization.

22131238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571.

The product of its digits is 576, while the sum is 22.

The square root of 22131238 is about 4704.3849757434. The cubic root of 22131238 is about 280.7600015943.

The spelling of 22131238 in words is "twenty-two million, one hundred thirty-one thousand, two hundred thirty-eight".