22240756 has 12 divisors (see below), whose sum is σ = 38977092. Its totient is φ = 11104448.

The previous prime is 22240753. The next prime is 22240759. The reversal of 22240756 is 65704222.

It is an interprime number because it is at equal distance from previous prime (22240753) and next prime (22240759).

It can be written as a sum of positive squares in 2 ways, for example, as 1392400 + 20848356 = 1180^2 + 4566^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505 + ... + 6688.

It is an arithmetic number, because the mean of its divisors is an integer number (3248091).

Almost surely, 2^22240756 is an apocalyptic number.

It is an amenable number.

22240756 is a deficient number, since it is larger than the sum of its proper divisors (16736336).

22240756 is a wasteful number, since it uses less digits than its factorization.

22240756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7970 (or 7968 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 22240756 is about 4716.0106021933. The cubic root of 22240756 is about 281.2223600163. Note that the first 3 decimals are identical.

Adding to 22240756 its reverse (65704222), we get a palindrome (87944978).

The spelling of 22240756 in words is "twenty-two million, two hundred forty thousand, seven hundred fifty-six".