22240736 has 24 divisors (see below), whose sum is σ = 50042160. Its totient is φ = 9531648.

The previous prime is 22240721. The next prime is 22240739. The reversal of 22240736 is 63704222.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49421 + ... + 49868.

It is an arithmetic number, because the mean of its divisors is an integer number (2085090).

Almost surely, 2^22240736 is an apocalyptic number.

It is an amenable number.

22240736 is an abundant number, since it is smaller than the sum of its proper divisors (27801424).

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

22240736 is an equidigital number, since it uses as much as digits as its factorization.

22240736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99306 (or 99298 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 22240736 is about 4716.0084817566. The cubic root of 22240736 is about 281.2222757198. Note that the first 4 decimals are identical.

Adding to 22240736 its reverse (63704222), we get a palindrome (85944958).

The spelling of 22240736 in words is "twenty-two million, two hundred forty thousand, seven hundred thirty-six".