13426047 has 8 divisors (see below), whose sum is σ = 19890480. Its totient is φ = 8950680.

The previous prime is 13426033. The next prime is 13426057. The reversal of 13426047 is 74062431.

13426047 is a `hidden beast` number, since 13 + 42 + 604 + 7 = 666.

It is not a de Polignac number, because 13426047 - 2⁸ = 13425791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 497261 = 13426047 / (1 + 3 + 4 + 2 + 6 + 0 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 13426047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13426057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248604 + ... + 248657.

It is an arithmetic number, because the mean of its divisors is an integer number (2486310).

Almost surely, 2^13426047 is an apocalyptic number.

13426047 is a deficient number, since it is larger than the sum of its proper divisors (6464433).

13426047 is an equidigital number, since it uses as much as digits as its factorization.

13426047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497270 (or 497264 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 13426047 is about 3664.1570654108. The cubic root of 13426047 is about 237.6745722971.

Adding to 13426047 its reverse (74062431), we get a palindrome (87488478).

The spelling of 13426047 in words is "thirteen million, four hundred twenty-six thousand, forty-seven".