13911768 has 96 divisors (see below), whose sum is σ = 41277600. Its totient is φ = 4207104.

The previous prime is 13911767. The next prime is 13911773. The reversal of 13911768 is 86711931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13911767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83221 + ... + 83387.

It is an arithmetic number, because the mean of its divisors is an integer number (429975).

Almost surely, 2^13911768 is an apocalyptic number.

13911768 is a gapful number since it is divisible by the number (18) 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 13911768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20638800).

13911768 is an abundant number, since it is smaller than the sum of its proper divisors (27365832).

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

13911768 is a wasteful number, since it uses less digits than its factorization.

13911768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 274 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 13911768 is about 3729.8482542860. The cubic root of 13911768 is about 240.5068455282.

The spelling of 13911768 in words is "thirteen million, nine hundred eleven thousand, seven hundred sixty-eight".