13840384 has 52 divisors (see below), whose sum is σ = 28832320. Its totient is φ = 6635520.

The previous prime is 13840381. The next prime is 13840399. The reversal of 13840384 is 48304831.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13840381) 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 3 ways as a sum of consecutive naturals, for example, 126922 + ... + 127030.

Almost surely, 2^13840384 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 13840384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14416160).

13840384 is an abundant number, since it is smaller than the sum of its proper divisors (14991936).

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

13840384 is an equidigital number, since it uses as much as digits as its factorization.

13840384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 13840384 is about 3720.2666571094. The cubic root of 13840384 is about 240.0947773818.

The spelling of 13840384 in words is "thirteen million, eight hundred forty thousand, three hundred eighty-four".