22005939 has 24 divisors (see below), whose sum is σ = 32173200. Its totient is φ = 13332480.

The previous prime is 22005937. The next prime is 22005943. The reversal of 22005939 is 93950022.

It is not a de Polignac number, because 22005939 - 2¹ = 22005937 is a prime.

It is a super-2 number, since 2×22005939² = 968522702543442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22005937) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48787 + ... + 49235.

It is an arithmetic number, because the mean of its divisors is an integer number (1340550).

Almost surely, 2^22005939 is an apocalyptic number.

22005939 is a deficient number, since it is larger than the sum of its proper divisors (10167261).

22005939 is a wasteful number, since it uses less digits than its factorization.

22005939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 22005939 is about 4691.0488166294. The cubic root of 22005939 is about 280.2291449055.

The spelling of 22005939 in words is "twenty-two million, five thousand, nine hundred thirty-nine".