13971426 has 32 divisors (see below), whose sum is σ = 32160768. Its totient is φ = 3963600.

The previous prime is 13971409. The next prime is 13971469. The reversal of 13971426 is 62417931.

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, 5241 + ... + 7443.

It is an arithmetic number, because the mean of its divisors is an integer number (1005024).

Almost surely, 2^13971426 is an apocalyptic number.

13971426 is an abundant number, since it is smaller than the sum of its proper divisors (18189342).

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

13971426 is a wasteful number, since it uses less digits than its factorization.

13971426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366.

The product of its digits is 9072, while the sum is 33.

The square root of 13971426 is about 3737.8370751011. The cubic root of 13971426 is about 240.8501447246.

The spelling of 13971426 in words is "thirteen million, nine hundred seventy-one thousand, four hundred twenty-six".