22167985 has 16 divisors (see below), whose sum is σ = 30707712. Its totient is φ = 15048000.

The previous prime is 22167979. The next prime is 22167989. The reversal of 22167985 is 58976122.

It is not a de Polignac number, because 22167985 - 2¹¹ = 22165937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22167989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400 + ... + 6670.

It is an arithmetic number, because the mean of its divisors is an integer number (1919232).

Almost surely, 2^22167985 is an apocalyptic number.

It is an amenable number.

22167985 is a deficient number, since it is larger than the sum of its proper divisors (8539727).

22167985 is a wasteful number, since it uses less digits than its factorization.

22167985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6384.

The product of its digits is 60480, while the sum is 40.

The square root of 22167985 is about 4708.2889673426. The cubic root of 22167985 is about 280.9153082071.

It can be divided in two parts, 2216 and 7985, that added together give a palindrome (10201).

The spelling of 22167985 in words is "twenty-two million, one hundred sixty-seven thousand, nine hundred eighty-five".