13678912 has 56 divisors (see below), whose sum is σ = 30019752. Its totient is φ = 6144000.

The previous prime is 13678909. The next prime is 13678933. The reversal of 13678912 is 21987631.

It can be written as a sum of positive squares in 4 ways, for example, as 891136 + 12787776 = 944^2 + 3576^2 .

It is a super-2 number, since 2×13678912² = 374225267007488, which contains 22 as substring.

It is a congruent number.

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, 33912 + ... + 34312.

It is an arithmetic number, because the mean of its divisors is an integer number (536067).

Almost surely, 2^13678912 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 13678912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15009876).

13678912 is an abundant number, since it is smaller than the sum of its proper divisors (16340840).

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

13678912 is a wasteful number, since it uses less digits than its factorization.

13678912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 457 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 13678912 is about 3698.5013181017. The cubic root of 13678912 is about 239.1574157143.

The spelling of 13678912 in words is "thirteen million, six hundred seventy-eight thousand, nine hundred twelve".