22157144 has 16 divisors (see below), whose sum is σ = 41596800. Its totient is φ = 11064672.

The previous prime is 22157143. The next prime is 22157167. The reversal of 22157144 is 44175122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22157143) 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, 8777 + ... + 11015.

It is an arithmetic number, because the mean of its divisors is an integer number (2599800).

Almost surely, 2^22157144 is an apocalyptic number.

It is an amenable number.

22157144 is a deficient number, since it is larger than the sum of its proper divisors (19439656).

22157144 is a wasteful number, since it uses less digits than its factorization.

22157144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482 (or 3478 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 22157144 is about 4707.1375590692. The cubic root of 22157144 is about 280.8695079320.

The spelling of 22157144 in words is "twenty-two million, one hundred fifty-seven thousand, one hundred forty-four".