18983424 has 80 divisors (see below), whose sum is σ = 53621568. Its totient is φ = 5947392.

The previous prime is 18983423. The next prime is 18983467. The reversal of 18983424 is 42438981.

It is not an unprimeable number, because it can be changed into a prime (18983423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25749 + ... + 26475.

Almost surely, 2^18983424 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 18983424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26810784).

18983424 is an abundant number, since it is smaller than the sum of its proper divisors (34638144).

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

18983424 is an equidigital number, since it uses as much as digits as its factorization.

18983424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 749 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 18983424 is about 4356.9971310525. The cubic root of 18983424 is about 266.7625433024.

The spelling of 18983424 in words is "eighteen million, nine hundred eighty-three thousand, four hundred twenty-four".