22238554 has 16 divisors (see below), whose sum is σ = 36896328. Its totient is φ = 9986112.

The previous prime is 22238551. The next prime is 22238581. The reversal of 22238554 is 45583222.

It can be written as a sum of positive squares in 4 ways, for example, as 12145225 + 10093329 = 3485^2 + 3177^2 .

It is not an unprimeable number, because it can be changed into a prime (22238551) 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 7 ways as a sum of consecutive naturals, for example, 10597 + ... + 12520.

Almost surely, 2^22238554 is an apocalyptic number.

22238554 is a deficient number, since it is larger than the sum of its proper divisors (14657774).

22238554 is a wasteful number, since it uses less digits than its factorization.

22238554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23169.

The product of its digits is 19200, while the sum is 31.

The square root of 22238554 is about 4715.7771363795. Note that the first 3 decimals coincide. The cubic root of 22238554 is about 281.2130786760.

The spelling of 22238554 in words is "twenty-two million, two hundred thirty-eight thousand, five hundred fifty-four".