22243356 has 24 divisors (see below), whose sum is σ = 57668240. Its totient is φ = 7414416.

The previous prime is 22243349. The next prime is 22243363. The reversal of 22243356 is 65334222.

22243356 is a `hidden beast` number, since 222 + 433 + 5 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (22243349) and next prime (22243363).

It is a super-2 number, since 2×22243356² = 989533772285472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 102871 + ... + 103086.

Almost surely, 2^22243356 is an apocalyptic number.

It is an amenable number.

22243356 is an abundant number, since it is smaller than the sum of its proper divisors (35424884).

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

22243356 is a wasteful number, since it uses less digits than its factorization.

22243356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205970 (or 205962 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 22243356 is about 4716.2862508546. The cubic root of 22243356 is about 281.2333181217.

Adding to 22243356 its reverse (65334222), we get a palindrome (87577578).

The spelling of 22243356 in words is "twenty-two million, two hundred forty-three thousand, three hundred fifty-six".