22165394 has 8 divisors (see below), whose sum is σ = 33571200. Its totient is φ = 10974996.

The previous prime is 22165393. The next prime is 22165397. The reversal of 22165394 is 49356122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22165394.

It is not an unprimeable number, because it can be changed into a prime (22165393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53594 + ... + 54005.

It is an arithmetic number, because the mean of its divisors is an integer number (4196400).

Almost surely, 2^22165394 is an apocalyptic number.

22165394 is a deficient number, since it is larger than the sum of its proper divisors (11405806).

22165394 is a wasteful number, since it uses less digits than its factorization.

22165394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107704.

The product of its digits is 12960, while the sum is 32.

The square root of 22165394 is about 4708.0138062669. The cubic root of 22165394 is about 280.9043632953.

The spelling of 22165394 in words is "twenty-two million, one hundred sixty-five thousand, three hundred ninety-four".