22118504 has 16 divisors (see below), whose sum is σ = 41973120. Its totient is φ = 10925680.

The previous prime is 22118501. The next prime is 22118519. The reversal of 22118504 is 40581122.

It is a self number, because there is not a number n which added to its sum of digits gives 22118504.

It is not an unprimeable number, because it can be changed into a prime (22118501) 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, 15992 + ... + 17319.

It is an arithmetic number, because the mean of its divisors is an integer number (2623320).

Almost surely, 2^22118504 is an apocalyptic number.

It is an amenable number.

22118504 is a deficient number, since it is larger than the sum of its proper divisors (19854616).

22118504 is a wasteful number, since it uses less digits than its factorization.

22118504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33400 (or 33396 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 22118504 is about 4703.0313628552. The cubic root of 22118504 is about 280.7061428241.

Adding to 22118504 its reverse (40581122), we get a palindrome (62699626).

It can be divided in two parts, 22118 and 504, that added together give a palindrome (22622).

The spelling of 22118504 in words is "twenty-two million, one hundred eighteen thousand, five hundred four".