18676384 has 48 divisors (see below), whose sum is σ = 38658816. Its totient is φ = 8870400.

The previous prime is 18676381. The next prime is 18676409. The reversal of 18676384 is 48367681.

It is a self number, because there is not a number n which added to its sum of digits gives 18676384.

It is not an unprimeable number, because it can be changed into a prime (18676381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66324 + ... + 66604.

It is an arithmetic number, because the mean of its divisors is an integer number (805392).

Almost surely, 2^18676384 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 18676384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19329408).

18676384 is an abundant number, since it is smaller than the sum of its proper divisors (19982432).

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

18676384 is a wasteful number, since it uses less digits than its factorization.

18676384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 381 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 18676384 is about 4321.6182154374. The cubic root of 18676384 is about 265.3165032856.

The spelling of 18676384 in words is "eighteen million, six hundred seventy-six thousand, three hundred eighty-four".