22144430 has 32 divisors (see below), whose sum is σ = 49697280. Its totient is φ = 6901920.

The previous prime is 22144427. The next prime is 22144433. The reversal of 22144430 is 3444122.

It is an interprime number because it is at equal distance from previous prime (22144427) and next prime (22144433).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144433) 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, 13610 + ... + 15149.

It is an arithmetic number, because the mean of its divisors is an integer number (1553040).

Almost surely, 2^22144430 is an apocalyptic number.

22144430 is an abundant number, since it is smaller than the sum of its proper divisors (27552850).

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

22144430 is a wasteful number, since it uses less digits than its factorization.

22144430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28784.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22144430 is about 4705.7868630018. The cubic root of 22144430 is about 280.8157757037.

Adding to 22144430 its reverse (3444122), we get a palindrome (25588552).

The spelling of 22144430 in words is "twenty-two million, one hundred forty-four thousand, four hundred thirty".