13691916 has 60 divisors (see below), whose sum is σ = 40913488. Its totient is φ = 3911328.

The previous prime is 13691903. The next prime is 13691921. The reversal of 13691916 is 61919631.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 751 + ... + 5286.

Almost surely, 2^13691916 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 13691916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20456744).

13691916 is an abundant number, since it is smaller than the sum of its proper divisors (27221572).

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

13691916 is a wasteful number, since it uses less digits than its factorization.

13691916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060 (or 6049 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 13691916 is about 3700.2589098602. The cubic root of 13691916 is about 239.2331775399.

The spelling of 13691916 in words is "thirteen million, six hundred ninety-one thousand, nine hundred sixteen".