13859328 has 80 divisors (see below), whose sum is σ = 42229440. Its totient is φ = 3956736.

The previous prime is 13859323. The next prime is 13859333. The reversal of 13859328 is 82395831.

It is an interprime number because it is at equal distance from previous prime (13859323) and next prime (13859333).

It is a super-2 number, since 2×13859328² = 384161945223168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13859323) 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, 10108 + ... + 11396.

It is an arithmetic number, because the mean of its divisors is an integer number (527868).

Almost surely, 2^13859328 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 13859328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21114720).

13859328 is an abundant number, since it is smaller than the sum of its proper divisors (28370112).

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

13859328 is an equidigital number, since it uses as much as digits as its factorization.

13859328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317 (or 1301 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 13859328 is about 3722.8118405313. The cubic root of 13859328 is about 240.2042705349.

The spelling of 13859328 in words is "thirteen million, eight hundred fifty-nine thousand, three hundred twenty-eight".