22138554 has 16 divisors (see below), whose sum is σ = 44684640. Its totient is φ = 7311600.

The previous prime is 22138531. The next prime is 22138559. The reversal of 22138554 is 45583122.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22138559) 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, 16272 + ... + 17579.

It is an arithmetic number, because the mean of its divisors is an integer number (2792790).

Almost surely, 2^22138554 is an apocalyptic number.

22138554 is an abundant number, since it is smaller than the sum of its proper divisors (22546086).

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

22138554 is a wasteful number, since it uses less digits than its factorization.

22138554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33965.

The product of its digits is 9600, while the sum is 30.

The square root of 22138554 is about 4705.1624839106. The cubic root of 22138554 is about 280.7909354547.

The spelling of 22138554 in words is "twenty-two million, one hundred thirty-eight thousand, five hundred fifty-four".