18842544 has 200 divisors, whose sum is σ = 65297408. Its totient is φ = 5132160.

The previous prime is 18842531. The next prime is 18842573. The reversal of 18842544 is 44524881.

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

It is a junction number, because it is equal to n+sod(n) for n = 18842499 and 18842508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 281199 + ... + 281265.

Almost surely, 2^18842544 is an apocalyptic number.

18842544 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 18842544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32648704).

18842544 is an abundant number, since it is smaller than the sum of its proper divisors (46454864).

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

18842544 is a wasteful number, since it uses less digits than its factorization.

18842544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 110 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 18842544 is about 4340.7999262809. The cubic root of 18842544 is about 266.1010037216.

The spelling of 18842544 in words is "eighteen million, eight hundred forty-two thousand, five hundred forty-four".