13440112 has 80 divisors (see below), whose sum is σ = 31744000. Its totient is φ = 5503680.

The previous prime is 13440109. The next prime is 13440121. The reversal of 13440112 is 21104431.

It is a super-2 number, since 2×13440112² = 361273221145088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170089 + ... + 170167.

It is an arithmetic number, because the mean of its divisors is an integer number (396800).

Almost surely, 2^13440112 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 13440112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15872000).

13440112 is an abundant number, since it is smaller than the sum of its proper divisors (18303888).

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

13440112 is an equidigital number, since it uses as much as digits as its factorization.

13440112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 13440112 is about 3666.0758311852. The cubic root of 13440112 is about 237.7575385445.

Adding to 13440112 its reverse (21104431), we get a palindrome (34544543).

The spelling of 13440112 in words is "thirteen million, four hundred forty thousand, one hundred twelve".