22206288 has 80 divisors (see below), whose sum is σ = 65065280. Its totient is φ = 6469632.

The previous prime is 22206287. The next prime is 22206299. The reversal of 22206288 is 88260222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22206287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10920 + ... + 12792.

It is an arithmetic number, because the mean of its divisors is an integer number (813316).

Almost surely, 2^22206288 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 22206288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32532640).

22206288 is an abundant number, since it is smaller than the sum of its proper divisors (42858992).

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

22206288 is a wasteful number, since it uses less digits than its factorization.

22206288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916 (or 1910 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 22206288 is about 4712.3548253501. The cubic root of 22206288 is about 281.0770084822.

The spelling of 22206288 in words is "twenty-two million, two hundred six thousand, two hundred eighty-eight".