22159144 has 32 divisors (see below), whose sum is σ = 47692800. Its totient is φ = 9455040.

The previous prime is 22159139. The next prime is 22159157. The reversal of 22159144 is 44195122.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14329 + ... + 15799.

It is an arithmetic number, because the mean of its divisors is an integer number (1490400).

Almost surely, 2^22159144 is an apocalyptic number.

It is an amenable number.

22159144 is an abundant number, since it is smaller than the sum of its proper divisors (25533656).

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

22159144 is a wasteful number, since it uses less digits than its factorization.

22159144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753 (or 1749 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 22159144 is about 4707.3499976101. The cubic root of 22159144 is about 280.8779585115.

The spelling of 22159144 in words is "twenty-two million, one hundred fifty-nine thousand, one hundred forty-four".