22355138 has 16 divisors (see below), whose sum is σ = 36473976. Its totient is φ = 10214400.

The previous prime is 22355107. The next prime is 22355147. The reversal of 22355138 is 83155322.

It can be written as a sum of positive squares in 4 ways, for example, as 22344529 + 10609 = 4727^2 + 103^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22355138.

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, 1631 + ... + 6882.

Almost surely, 2^22355138 is an apocalyptic number.

22355138 is a deficient number, since it is larger than the sum of its proper divisors (14118838).

22355138 is a wasteful number, since it uses less digits than its factorization.

22355138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8629.

The product of its digits is 7200, while the sum is 29.

The square root of 22355138 is about 4728.1220373421. The cubic root of 22355138 is about 281.7036354652.

The spelling of 22355138 in words is "twenty-two million, three hundred fifty-five thousand, one hundred thirty-eight".