18298224 has 100 divisors (see below), whose sum is σ = 60556144. Its totient is φ = 5225472.

The previous prime is 18298213. The next prime is 18298289. The reversal of 18298224 is 42289281.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8064 + ... + 10080.

Almost surely, 2^18298224 is an apocalyptic number.

18298224 is a gapful number since it is divisible by the number (14) 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 18298224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30278072).

18298224 is an abundant number, since it is smaller than the sum of its proper divisors (42257920).

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

18298224 is a wasteful number, since it uses less digits than its factorization.

18298224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044 (or 2029 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 18298224 is about 4277.6423412904. The cubic root of 18298224 is about 263.5135670839.

The spelling of 18298224 in words is "eighteen million, two hundred ninety-eight thousand, two hundred twenty-four".