13426387 has 4 divisors (see below), whose sum is σ = 14459200. Its totient is φ = 12393576.

The previous prime is 13426373. The next prime is 13426397. The reversal of 13426387 is 78362431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-13426387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13426307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516387 + ... + 516412.

It is an arithmetic number, because the mean of its divisors is an integer number (3614800).

Almost surely, 2^13426387 is an apocalyptic number.

13426387 is a deficient number, since it is larger than the sum of its proper divisors (1032813).

13426387 is a wasteful number, since it uses less digits than its factorization.

13426387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032812.

The product of its digits is 24192, while the sum is 34.

The square root of 13426387 is about 3664.2034605082. The cubic root of 13426387 is about 237.6765785633.

The spelling of 13426387 in words is "thirteen million, four hundred twenty-six thousand, three hundred eighty-seven".