18414224 has 30 divisors (see below), whose sum is σ = 36522774. Its totient is φ = 8993920.

The previous prime is 18414203. The next prime is 18414229. The reversal of 18414224 is 42241481.

It can be written as a sum of positive squares in only one way, i.e., 14137600 + 4276624 = 3760^2 + 2068^2 .

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 = 18414193 and 18414202.

It is not an unprimeable number, because it can be changed into a prime (18414229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35084 + ... + 35604.

Almost surely, 2^18414224 is an apocalyptic number.

It is an amenable number.

18414224 is a deficient number, since it is larger than the sum of its proper divisors (18108550).

18414224 is an equidigital number, since it uses as much as digits as its factorization.

18414224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 570 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

The square root of 18414224 is about 4291.1797911530. The cubic root of 18414224 is about 264.0692349787.

The spelling of 18414224 in words is "eighteen million, four hundred fourteen thousand, two hundred twenty-four".