13971286 has 8 divisors (see below), whose sum is σ = 23950800. Its totient is φ = 5987688.

The previous prime is 13971271. The next prime is 13971299. The reversal of 13971286 is 68217931.

13971286 = T₁₁₄₃ + T₁₁₄₄ + ... + T₁₁₆₃.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498961 + ... + 498988.

It is an arithmetic number, because the mean of its divisors is an integer number (2993850).

Almost surely, 2^13971286 is an apocalyptic number.

13971286 is a deficient number, since it is larger than the sum of its proper divisors (9979514).

13971286 is an equidigital number, since it uses as much as digits as its factorization.

13971286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997958.

The product of its digits is 18144, while the sum is 37.

The square root of 13971286 is about 3737.8183476461. The cubic root of 13971286 is about 240.8493402461.

The spelling of 13971286 in words is "thirteen million, nine hundred seventy-one thousand, two hundred eighty-six".