22006985 has 32 divisors (see below), whose sum is σ = 35465472. Its totient is φ = 12660480.

The previous prime is 22006981. The next prime is 22006987. The reversal of 22006985 is 58960022.

It is not a de Polignac number, because 22006985 - 2² = 22006981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22006981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2807 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (1108296).

Almost surely, 2^22006985 is an apocalyptic number.

It is an amenable number.

22006985 is a deficient number, since it is larger than the sum of its proper divisors (13458487).

22006985 is a wasteful number, since it uses less digits than its factorization.

22006985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 22006985 is about 4691.1603042318. The cubic root of 22006985 is about 280.2335848439.

The spelling of 22006985 in words is "twenty-two million, six thousand, nine hundred eighty-five".