12378 has 8 divisors (see below), whose sum is σ = 24768. Its totient is φ = 4124.

The previous prime is 12377. The next prime is 12379. The reversal of 12378 is 87321.

It is an interprime number because it is at equal distance from previous prime (12377) and next prime (12379).

It is a sphenic number, since it is the product of 3 distinct primes.

12378 is an admirable number.

It is a plaindrome in base 10.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026 + ... + 1037.

It is an arithmetic number, because the mean of its divisors is an integer number (3096).

2¹²³⁷⁸ is an apocalyptic number.

12378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12384).

12378 is a wasteful number, since it uses less digits than its factorization.

12378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068.

The product of its digits is 336, while the sum is 21.

The square root of 12378 is about 111.2564604866. The cubic root of 12378 is about 23.1321940121.

Adding to 12378 its reverse (87321), we get a palindrome (99699).

The spelling of 12378 in words is "twelve thousand, three hundred seventy-eight".