22206604 has 36 divisors (see below), whose sum is σ = 45591336. Its totient is φ = 9436224.

The previous prime is 22206601. The next prime is 22206617. The reversal of 22206604 is 40660222.

It is a happy number.

It is a super-2 number, since 2×22206604² = 986266522425632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22206601) 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 11 ways as a sum of consecutive naturals, for example, 26439 + ... + 27265.

It is an arithmetic number, because the mean of its divisors is an integer number (1266426).

Almost surely, 2^22206604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22206604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22795668).

22206604 is an abundant number, since it is smaller than the sum of its proper divisors (23384732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22206604 is a wasteful number, since it uses less digits than its factorization.

22206604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 973 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22206604 is about 4712.3883541151. The cubic root of 22206604 is about 281.0783417369.

Adding to 22206604 its reverse (40660222), we get a palindrome (62866826).

The spelling of 22206604 in words is "twenty-two million, two hundred six thousand, six hundred four".