22169145 has 16 divisors (see below), whose sum is σ = 35543232. Its totient is φ = 11799360.

The previous prime is 22169117. The next prime is 22169149. The reversal of 22169145 is 54196122.

It is not a de Polignac number, because 22169145 - 2⁵ = 22169113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22169149) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7990 + ... + 10400.

It is an arithmetic number, because the mean of its divisors is an integer number (2221452).

Almost surely, 2^22169145 is an apocalyptic number.

It is an amenable number.

22169145 is a deficient number, since it is larger than the sum of its proper divisors (13374087).

22169145 is a wasteful number, since it uses less digits than its factorization.

22169145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032.

The product of its digits is 4320, while the sum is 30.

The square root of 22169145 is about 4708.4121527326. The cubic root of 22169145 is about 280.9202080070.

The spelling of 22169145 in words is "twenty-two million, one hundred sixty-nine thousand, one hundred forty-five".