18124224 has 28 divisors (see below), whose sum is σ = 47954184. Its totient is φ = 6041344.

The previous prime is 18124201. The next prime is 18124229. The reversal of 18124224 is 42242181.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 = 18124194 and 18124203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18124229) 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, 47007 + ... + 47390.

Almost surely, 2^18124224 is an apocalyptic number.

It is an amenable number.

18124224 is an abundant number, since it is smaller than the sum of its proper divisors (29829960).

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

18124224 is an equidigital number, since it uses as much as digits as its factorization.

18124224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94412 (or 94402 counting only the distinct ones).

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

The square root of 18124224 is about 4257.2554539280. The cubic root of 18124224 is about 262.6756448041.

The spelling of 18124224 in words is "eighteen million, one hundred twenty-four thousand, two hundred twenty-four".