22420444 has 6 divisors (see below), whose sum is σ = 39235784. Its totient is φ = 11210220.

The previous prime is 22420441. The next prime is 22420493. The reversal of 22420444 is 44402422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802552 + ... + 2802559.

Almost surely, 2^22420444 is an apocalyptic number.

It is an amenable number.

22420444 is a deficient number, since it is larger than the sum of its proper divisors (16815340).

22420444 is a wasteful number, since it uses less digits than its factorization.

22420444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605115 (or 5605113 counting only the distinct ones).

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

The square root of 22420444 is about 4735.0231256035. The cubic root of 22420444 is about 281.9776821196.

Adding to 22420444 its reverse (44402422), we get a palindrome (66822866).

The spelling of 22420444 in words is "twenty-two million, four hundred twenty thousand, four hundred forty-four".