22240456 has 16 divisors (see below), whose sum is σ = 47658240. Its totient is φ = 9531600.

The previous prime is 22240433. The next prime is 22240457. The reversal of 22240456 is 65404222.

It is a self number, because there is not a number n which added to its sum of digits gives 22240456.

It is not an unprimeable number, because it can be changed into a prime (22240457) 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, 198520 + ... + 198631.

It is an arithmetic number, because the mean of its divisors is an integer number (2978640).

Almost surely, 2^22240456 is an apocalyptic number.

It is an amenable number.

22240456 is an abundant number, since it is smaller than the sum of its proper divisors (25417784).

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

22240456 is a wasteful number, since it uses less digits than its factorization.

22240456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397164 (or 397160 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 22240456 is about 4715.9787955418. The cubic root of 22240456 is about 281.2210955645.

Adding to 22240456 its reverse (65404222), we get a palindrome (87644678).

The spelling of 22240456 in words is "twenty-two million, two hundred forty thousand, four hundred fifty-six".