22557144 has 16 divisors (see below), whose sum is σ = 56392920. Its totient is φ = 7519040.

The previous prime is 22557131. The next prime is 22557149. The reversal of 22557144 is 44175522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22557149) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 469917 + ... + 469964.

Almost surely, 2^22557144 is an apocalyptic number.

22557144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22557144 is an abundant number, since it is smaller than the sum of its proper divisors (33835776).

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

22557144 is a wasteful number, since it uses less digits than its factorization.

22557144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939890 (or 939886 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 22557144 is about 4749.4361770635. The cubic root of 22557144 is about 282.5496046759.

The spelling of 22557144 in words is "twenty-two million, five hundred fifty-seven thousand, one hundred forty-four".