22144470 has 32 divisors (see below), whose sum is σ = 54051840. Its totient is φ = 5804640.

The previous prime is 22144453. The next prime is 22144471. The reversal of 22144470 is 7444122.

It is a self number, because there is not a number n which added to its sum of digits gives 22144470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4486 + ... + 8025.

It is an arithmetic number, because the mean of its divisors is an integer number (1689120).

Almost surely, 2^22144470 is an apocalyptic number.

22144470 is an abundant number, since it is smaller than the sum of its proper divisors (31907370).

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

22144470 is a wasteful number, since it uses less digits than its factorization.

22144470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12580.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 22144470 is about 4705.7911130861. The cubic root of 22144470 is about 280.8159447850.

Adding to 22144470 its reverse (7444122), we get a palindrome (29588592).

The spelling of 22144470 in words is "twenty-two million, one hundred forty-four thousand, four hundred seventy".