22043985 has 32 divisors (see below), whose sum is σ = 37677312. Its totient is φ = 10967040.

The previous prime is 22043977. The next prime is 22043999. The reversal of 22043985 is 58934022.

It is a happy number.

It is not a de Polignac number, because 22043985 - 2³ = 22043977 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34620 + ... + 35250.

It is an arithmetic number, because the mean of its divisors is an integer number (1177416).

Almost surely, 2^22043985 is an apocalyptic number.

It is an amenable number.

22043985 is a deficient number, since it is larger than the sum of its proper divisors (15633327).

22043985 is a wasteful number, since it uses less digits than its factorization.

22043985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 22043985 is about 4695.1022353086. The cubic root of 22043985 is about 280.3905476927.

The spelling of 22043985 in words is "twenty-two million, forty-three thousand, nine hundred eighty-five".