13986816 has 88 divisors (see below), whose sum is σ = 38811120. Its totient is φ = 4472832.

The previous prime is 13986809. The next prime is 13986823. The reversal of 13986816 is 61868931.

It is an interprime number because it is at equal distance from previous prime (13986809) and next prime (13986823).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89010 + ... + 89166.

Almost surely, 2^13986816 is an apocalyptic number.

13986816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13986816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19405560).

13986816 is an abundant number, since it is smaller than the sum of its proper divisors (24824304).

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

13986816 is a wasteful number, since it uses less digits than its factorization.

13986816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 191 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 13986816 is about 3739.8951856971. The cubic root of 13986816 is about 240.9385471431.

The spelling of 13986816 in words is "thirteen million, nine hundred eighty-six thousand, eight hundred sixteen".