12378112 has 28 divisors (see below), whose sum is σ = 24771096. Its totient is φ = 6184960.

The previous prime is 12378103. The next prime is 12378127. The reversal of 12378112 is 21187321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7437 + ... + 8947.

It is an arithmetic number, because the mean of its divisors is an integer number (884682).

Almost surely, 2^12378112 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 12378112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12385548).

12378112 is an abundant number, since it is smaller than the sum of its proper divisors (12392984).

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

12378112 is an frugal number, since it uses more digits than its factorization.

12378112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537 (or 1513 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 12378112 is about 3518.2541124825. The cubic root of 12378112 is about 231.3226378096.

The spelling of 12378112 in words is "twelve million, three hundred seventy-eight thousand, one hundred twelve".