13643427 has 32 divisors (see below), whose sum is σ = 22049280. Its totient is φ = 7338240.

The previous prime is 13643407. The next prime is 13643437. The reversal of 13643427 is 72434631.

It is not a de Polignac number, because 13643427 - 2¹¹ = 13641379 is a prime.

It is a super-2 number, since 2×13643427² = 372286200608658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13643394 and 13643403.

It is not an unprimeable number, because it can be changed into a prime (13643407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25927 + ... + 26447.

It is an arithmetic number, because the mean of its divisors is an integer number (689040).

Almost surely, 2^13643427 is an apocalyptic number.

13643427 is a deficient number, since it is larger than the sum of its proper divisors (8405853).

13643427 is a wasteful number, since it uses less digits than its factorization.

13643427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603.

The product of its digits is 12096, while the sum is 30.

The square root of 13643427 is about 3693.7009895226. The cubic root of 13643427 is about 238.9504340996.

The spelling of 13643427 in words is "thirteen million, six hundred forty-three thousand, four hundred twenty-seven".