22533438 has 16 divisors (see below), whose sum is σ = 45138960. Its totient is φ = 7499136.

The previous prime is 22533437. The next prime is 22533473. The reversal of 22533438 is 83433522.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22533437) 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, 1606 + ... + 6902.

It is an arithmetic number, because the mean of its divisors is an integer number (2821185).

Almost surely, 2^22533438 is an apocalyptic number.

22533438 is an abundant number, since it is smaller than the sum of its proper divisors (22605522).

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

22533438 is a wasteful number, since it uses less digits than its factorization.

22533438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011.

The product of its digits is 17280, while the sum is 30.

The square root of 22533438 is about 4746.9398563706. The cubic root of 22533438 is about 282.4505899437.

The spelling of 22533438 in words is "twenty-two million, five hundred thirty-three thousand, four hundred thirty-eight".