22147444 has 12 divisors (see below), whose sum is σ = 42281568. Its totient is φ = 10067000.

The previous prime is 22147441. The next prime is 22147501. The reversal of 22147444 is 44474122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22147441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251632 + ... + 251719.

It is an arithmetic number, because the mean of its divisors is an integer number (3523464).

Almost surely, 2^22147444 is an apocalyptic number.

It is an amenable number.

22147444 is a deficient number, since it is larger than the sum of its proper divisors (20134124).

22147444 is a wasteful number, since it uses less digits than its factorization.

22147444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503366 (or 503364 counting only the distinct ones).

The product of its digits is 7168, while the sum is 28.

The square root of 22147444 is about 4706.1070961040. The cubic root of 22147444 is about 280.8285154062.

The spelling of 22147444 in words is "twenty-two million, one hundred forty-seven thousand, four hundred forty-four".