13681038 has 32 divisors (see below), whose sum is σ = 31806720. Its totient is φ = 3841920.

The previous prime is 13681037. The next prime is 13681091. The reversal of 13681038 is 83018631.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13680996 and 13681014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13681033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (993960).

Almost surely, 2^13681038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13681038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15903360).

13681038 is an abundant number, since it is smaller than the sum of its proper divisors (18125682).

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

13681038 is a wasteful number, since it uses less digits than its factorization.

13681038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5592.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 13681038 is about 3698.7887206490. The cubic root of 13681038 is about 239.1698051579.

Adding to 13681038 its reverse (83018631), we get a palindrome (96699669).

The spelling of 13681038 in words is "thirteen million, six hundred eighty-one thousand, thirty-eight".