22164394 has 8 divisors (see below), whose sum is σ = 37996128. Its totient is φ = 9499020.

The previous prime is 22164377. The next prime is 22164397. The reversal of 22164394 is 49346122.

It is a happy number.

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

It is a super-2 number, since 2×22164394² = 982520722774472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22164397) 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, 791572 + ... + 791599.

It is an arithmetic number, because the mean of its divisors is an integer number (4749516).

Almost surely, 2^22164394 is an apocalyptic number.

22164394 is a deficient number, since it is larger than the sum of its proper divisors (15831734).

22164394 is a wasteful number, since it uses less digits than its factorization.

22164394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583180.

The product of its digits is 10368, while the sum is 31.

The square root of 22164394 is about 4707.9076031715. The cubic root of 22164394 is about 280.9001388635.

The spelling of 22164394 in words is "twenty-two million, one hundred sixty-four thousand, three hundred ninety-four".