22154244 has 48 divisors (see below), whose sum is σ = 61651968. Its totient is φ = 6054048.

The previous prime is 22154233. The next prime is 22154263. The reversal of 22154244 is 44245122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3802 + ... + 7665.

It is an arithmetic number, because the mean of its divisors is an integer number (1284416).

Almost surely, 2^22154244 is an apocalyptic number.

It is an amenable number.

22154244 is an abundant number, since it is smaller than the sum of its proper divisors (39497724).

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

22154244 is a wasteful number, since it uses less digits than its factorization.

22154244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11504 (or 11502 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 22154244 is about 4706.8295061538. The cubic root of 22154244 is about 280.8572536886.

Adding to 22154244 its reverse (44245122), we get a palindrome (66399366).

The spelling of 22154244 in words is "twenty-two million, one hundred fifty-four thousand, two hundred forty-four".