18885244 has 24 divisors (see below), whose sum is σ = 38793440. Its totient is φ = 7874496.

The previous prime is 18885233. The next prime is 18885253. The reversal of 18885244 is 44258881.

It is a junction number, because it is equal to n+sod(n) for n = 18885197 and 18885206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8079 + ... + 10150.

Almost surely, 2^18885244 is an apocalyptic number.

18885244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18885244 is an abundant number, since it is smaller than the sum of its proper divisors (19908196).

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

18885244 is a wasteful number, since it uses less digits than its factorization.

18885244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18277 (or 18275 counting only the distinct ones).

The product of its digits is 81920, while the sum is 40.

The square root of 18885244 is about 4345.7155912462. The cubic root of 18885244 is about 266.3018601912.

The spelling of 18885244 in words is "eighteen million, eight hundred eighty-five thousand, two hundred forty-four".