22505944 has 16 divisors (see below), whose sum is σ = 42289200. Its totient is φ = 11228832.

The previous prime is 22505941. The next prime is 22505947. The reversal of 22505944 is 44950522.

It is an interprime number because it is at equal distance from previous prime (22505941) and next prime (22505947).

It is a super-2 number, since 2×22505944² = 1013035030662272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1309 + ... + 6835.

It is an arithmetic number, because the mean of its divisors is an integer number (2643075).

Almost surely, 2^22505944 is an apocalyptic number.

It is an amenable number.

22505944 is a deficient number, since it is larger than the sum of its proper divisors (19783256).

22505944 is a wasteful number, since it uses less digits than its factorization.

22505944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6042 (or 6038 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 22505944 is about 4744.0430014914. The cubic root of 22505944 is about 282.3356665562.

The spelling of 22505944 in words is "twenty-two million, five hundred five thousand, nine hundred forty-four".