13643896 has 32 divisors (see below), whose sum is σ = 29795040. Its totient is φ = 5735808.

The previous prime is 13643879. The next prime is 13643921. The reversal of 13643896 is 69834631.

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, 670 + ... + 5266.

It is an arithmetic number, because the mean of its divisors is an integer number (931095).

Almost surely, 2^13643896 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 13643896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14897520).

13643896 is an abundant number, since it is smaller than the sum of its proper divisors (16151144).

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

13643896 is a wasteful number, since it uses less digits than its factorization.

13643896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4663 (or 4659 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 13643896 is about 3693.7644754369. The cubic root of 13643896 is about 238.9531720840.

The spelling of 13643896 in words is "thirteen million, six hundred forty-three thousand, eight hundred ninety-six".