22240444 has 12 divisors (see below), whose sum is σ = 39083968. Its totient is φ = 11073600.

The previous prime is 22240433. The next prime is 22240457. The reversal of 22240444 is 44404222.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

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, 10572 + ... + 12499.

Almost surely, 2^22240444 is an apocalyptic number.

It is an amenable number.

22240444 is a deficient number, since it is larger than the sum of its proper divisors (16843524).

22240444 is a wasteful number, since it uses less digits than its factorization.

22240444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23316 (or 23314 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 22240444 is about 4715.9775232713. The cubic root of 22240444 is about 281.2210449862.

Adding to 22240444 its reverse (44404222), we get a palindrome (66644666).

The spelling of 22240444 in words is "twenty-two million, two hundred forty thousand, four hundred forty-four".