22144154 has 4 divisors (see below), whose sum is σ = 33216234. Its totient is φ = 11072076.

The previous prime is 22144117. The next prime is 22144169. The reversal of 22144154 is 45144122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11730625 + 10413529 = 3425^2 + 3227^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5536037 + ... + 5536040.

Almost surely, 2^22144154 is an apocalyptic number.

22144154 is a deficient number, since it is larger than the sum of its proper divisors (11072080).

22144154 is a wasteful number, since it uses less digits than its factorization.

22144154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11072079.

The product of its digits is 1280, while the sum is 23.

The square root of 22144154 is about 4705.7575373153. The cubic root of 22144154 is about 280.8146090375.

Adding to 22144154 its reverse (45144122), we get a palindrome (67288276).

The spelling of 22144154 in words is "twenty-two million, one hundred forty-four thousand, one hundred fifty-four".