22118424 has 16 divisors (see below), whose sum is σ = 55296120. Its totient is φ = 7372800.

The previous prime is 22118401. The next prime is 22118449. The reversal of 22118424 is 42481122.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 921601 = 22118424 / (2 + 2 + 1 + 1 + 8 + 4 + 2 + 4).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22118394 and 22118403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460777 + ... + 460824.

Almost surely, 2^22118424 is an apocalyptic number.

22118424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22118424 is an abundant number, since it is smaller than the sum of its proper divisors (33177696).

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

22118424 is a wasteful number, since it uses less digits than its factorization.

22118424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921610 (or 921606 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

The square root of 22118424 is about 4703.0228576948. The cubic root of 22118424 is about 280.7058043968.

Adding to 22118424 its reverse (42481122), we get a palindrome (64599546).

It can be divided in two parts, 221184 and 24, that multiplied together give a 4-th power (5308416 = 48⁴).

The spelling of 22118424 in words is "twenty-two million, one hundred eighteen thousand, four hundred twenty-four".