18024228 has 48 divisors (see below), whose sum is σ = 47071360. Its totient is φ = 5964192.

The previous prime is 18024169. The next prime is 18024229. The reversal of 18024228 is 82242081.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18024229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16425 + ... + 17487.

Almost surely, 2^18024228 is an apocalyptic number.

18024228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18024228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23535680).

18024228 is an abundant number, since it is smaller than the sum of its proper divisors (29047132).

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

18024228 is a wasteful number, since it uses less digits than its factorization.

18024228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 18024228 is about 4245.4950241403. The cubic root of 18024228 is about 262.1916706349.

The spelling of 18024228 in words is "eighteen million, twenty-four thousand, two hundred twenty-eight".