22223644 has 12 divisors (see below), whose sum is σ = 38924424. Its totient is φ = 11102384.

The previous prime is 22223633. The next prime is 22223651. The reversal of 22223644 is 44632222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7734 + ... + 10210.

It is an arithmetic number, because the mean of its divisors is an integer number (3243702).

Almost surely, 2^22223644 is an apocalyptic number.

It is an amenable number.

22223644 is a deficient number, since it is larger than the sum of its proper divisors (16700780).

22223644 is a wasteful number, since it uses less digits than its factorization.

22223644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724 (or 4722 counting only the distinct ones).

The product of its digits is 4608, while the sum is 25.

The square root of 22223644 is about 4714.1960078045. The cubic root of 22223644 is about 281.1502175085.

Adding to 22223644 its reverse (44632222), we get a palindrome (66855866).

The spelling of 22223644 in words is "twenty-two million, two hundred twenty-three thousand, six hundred forty-four".