13812286 has 4 divisors (see below), whose sum is σ = 20718432. Its totient is φ = 6906142.

The previous prime is 13812263. The next prime is 13812287. The reversal of 13812286 is 68221831.

13812286 = T₃₀₃₃ + T₃₀₃₄ + T₃₀₃₅.

13812286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68221831 = 887 ⋅76913.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13812287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3453070 + ... + 3453073.

It is an arithmetic number, because the mean of its divisors is an integer number (5179608).

Almost surely, 2^13812286 is an apocalyptic number.

13812286 is the 3035-th centered triangular number.

13812286 is a deficient number, since it is larger than the sum of its proper divisors (6906146).

13812286 is an equidigital number, since it uses as much as digits as its factorization.

13812286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6906145.

The product of its digits is 4608, while the sum is 31.

The square root of 13812286 is about 3716.4883963225. The cubic root of 13812286 is about 239.9321914916.

The spelling of 13812286 in words is "thirteen million, eight hundred twelve thousand, two hundred eighty-six".