13731366 has 32 divisors (see below), whose sum is σ = 30774528. Its totient is φ = 4047840.

The previous prime is 13731353. The next prime is 13731401. The reversal of 13731366 is 66313731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (961704).

Almost surely, 2^13731366 is an apocalyptic number.

13731366 is an abundant number, since it is smaller than the sum of its proper divisors (17043162).

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

13731366 is a wasteful number, since it uses less digits than its factorization.

13731366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676.

The product of its digits is 6804, while the sum is 30.

The square root of 13731366 is about 3705.5857836515. The cubic root of 13731366 is about 239.4627217256.

The spelling of 13731366 in words is "thirteen million, seven hundred thirty-one thousand, three hundred sixty-six".