22640841 has 12 divisors (see below), whose sum is σ = 33192432. Its totient is φ = 14868216.

The previous prime is 22640831. The next prime is 22640857. The reversal of 22640841 is 14804622.

It is not a de Polignac number, because 22640841 - 2⁶ = 22640777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22640801) 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 11 ways as a sum of consecutive naturals, for example, 18171 + ... + 19376.

It is an arithmetic number, because the mean of its divisors is an integer number (2766036).

Almost surely, 2^22640841 is an apocalyptic number.

It is an amenable number.

22640841 is a deficient number, since it is larger than the sum of its proper divisors (10551591).

22640841 is a wasteful number, since it uses less digits than its factorization.

22640841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37620 (or 37617 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 22640841 is about 4758.2392751941. The cubic root of 22640841 is about 282.8986347590.

The spelling of 22640841 in words is "twenty-two million, six hundred forty thousand, eight hundred forty-one".