18982224 has 60 divisors (see below), whose sum is σ = 54019732. Its totient is φ = 6220800.

The previous prime is 18982207. The next prime is 18982231. The reversal of 18982224 is 42228981.

It can be written as a sum of positive squares in 2 ways, for example, as 5143824 + 13838400 = 2268^2 + 3720^2 .

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 11 ways as a sum of consecutive naturals, for example, 7704 + ... + 9864.

Almost surely, 2^18982224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18982224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27009866).

18982224 is an abundant number, since it is smaller than the sum of its proper divisors (35037508).

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

18982224 is a wasteful number, since it uses less digits than its factorization.

18982224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236 (or 2227 counting only the distinct ones).

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

The square root of 18982224 is about 4356.8594193524. The cubic root of 18982224 is about 266.7569222266.

The spelling of 18982224 in words is "eighteen million, nine hundred eighty-two thousand, two hundred twenty-four".