22164709 has 24 divisors (see below), whose sum is σ = 27381888. Its totient is φ = 17851680.

The previous prime is 22164691. The next prime is 22164713. The reversal of 22164709 is 90746122.

It is not a de Polignac number, because 22164709 - 2⁵ = 22164677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22164749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79879 + ... + 80155.

It is an arithmetic number, because the mean of its divisors is an integer number (1140912).

Almost surely, 2^22164709 is an apocalyptic number.

It is an amenable number.

22164709 is a deficient number, since it is larger than the sum of its proper divisors (5217179).

22164709 is a wasteful number, since it uses less digits than its factorization.

22164709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 22164709 is about 4707.9410574050. The cubic root of 22164709 is about 280.9014695732.

The spelling of 22164709 in words is "twenty-two million, one hundred sixty-four thousand, seven hundred nine".