22165923 has 16 divisors (see below), whose sum is σ = 32690336. Its totient is φ = 13271040.

The previous prime is 22165921. The next prime is 22165933. The reversal of 22165923 is 32956122.

It is not a de Polignac number, because 22165923 - 2¹ = 22165921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22165921) 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, 6238 + ... + 9123.

It is an arithmetic number, because the mean of its divisors is an integer number (2043146).

Almost surely, 2^22165923 is an apocalyptic number.

22165923 is a deficient number, since it is larger than the sum of its proper divisors (10524413).

22165923 is a wasteful number, since it uses less digits than its factorization.

22165923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15414.

The product of its digits is 6480, while the sum is 30.

The square root of 22165923 is about 4708.0699867355. The cubic root of 22165923 is about 280.9065979683.

The spelling of 22165923 in words is "twenty-two million, one hundred sixty-five thousand, nine hundred twenty-three".