22054144 has 72 divisors (see below), whose sum is σ = 52064768. Its totient is φ = 9123840.

The previous prime is 22054133. The next prime is 22054147. The reversal of 22054144 is 44145022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22054147) 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, 55354 + ... + 55750.

Almost surely, 2^22054144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22054144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26032384).

22054144 is an abundant number, since it is smaller than the sum of its proper divisors (30010624).

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

22054144 is an equidigital number, since it uses as much as digits as its factorization.

22054144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 22054144 is about 4696.1839827673. The cubic root of 22054144 is about 280.4336138641.

Adding to 22054144 its reverse (44145022), we get a palindrome (66199166).

The spelling of 22054144 in words is "twenty-two million, fifty-four thousand, one hundred forty-four".