18714384 has 90 divisors (see below), whose sum is σ = 56786730. Its totient is φ = 5750784.

The previous prime is 18714361. The next prime is 18714419. The reversal of 18714384 is 48341781.

It can be written as a sum of positive squares in 3 ways, for example, as 51984 + 18662400 = 228^2 + 4320^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23952 + ... + 24720.

Almost surely, 2^18714384 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 18714384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28393365).

18714384 is an abundant number, since it is smaller than the sum of its proper divisors (38072346).

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

18714384 is a wasteful number, since it uses less digits than its factorization.

18714384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 787 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 18714384 is about 4326.0124826450. The cubic root of 18714384 is about 265.4963239088.

The spelling of 18714384 in words is "eighteen million, seven hundred fourteen thousand, three hundred eighty-four".