22004690 has 16 divisors (see below), whose sum is σ = 39680280. Its totient is φ = 8785920.

The previous prime is 22004687. The next prime is 22004701. The reversal of 22004690 is 9640022.

It can be written as a sum of positive squares in 4 ways, for example, as 19245769 + 2758921 = 4387^2 + 1661^2 .

It is a super-2 number, since 2×22004690² = 968412763992200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4946 + ... + 8274.

Almost surely, 2^22004690 is an apocalyptic number.

22004690 is a deficient number, since it is larger than the sum of its proper divisors (17675590).

22004690 is a wasteful number, since it uses less digits than its factorization.

22004690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 22004690 is about 4690.9156888608. The cubic root of 22004690 is about 280.2238431121.

The spelling of 22004690 in words is "twenty-two million, four thousand, six hundred ninety".