13978112 has 40 divisors (see below), whose sum is σ = 29167776. Its totient is φ = 6679552.

The previous prime is 13978109. The next prime is 13978123. The reversal of 13978112 is 21187931.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11183 + ... + 12369.

Almost surely, 2^13978112 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 13978112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14583888).

13978112 is an abundant number, since it is smaller than the sum of its proper divisors (15189664).

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

13978112 is an equidigital number, since it uses as much as digits as its factorization.

13978112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1212 counting only the distinct ones).

The product of its digits is 3024, while the sum is 32.

The square root of 13978112 is about 3738.7313356271. The cubic root of 13978112 is about 240.8885580610. Note that the first 3 decimals are identical.

The spelling of 13978112 in words is "thirteen million, nine hundred seventy-eight thousand, one hundred twelve".