13343845 has 4 divisors (see below), whose sum is σ = 16012620. Its totient is φ = 10675072.

The previous prime is 13343843. The next prime is 13343849. The reversal of 13343845 is 54834331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8755681 + 4588164 = 2959^2 + 2142^2 .

It is a cyclic number.

It is not a de Polignac number, because 13343845 - 2¹ = 13343843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13343843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1334380 + ... + 1334389.

It is an arithmetic number, because the mean of its divisors is an integer number (4003155).

Almost surely, 2^13343845 is an apocalyptic number.

It is an amenable number.

13343845 is a deficient number, since it is larger than the sum of its proper divisors (2668775).

13343845 is an equidigital number, since it uses as much as digits as its factorization.

13343845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668774.

The product of its digits is 17280, while the sum is 31.

The square root of 13343845 is about 3652.9228023598. The cubic root of 13343845 is about 237.1885187253.

It can be divided in two parts, 133 and 43845, that multiplied together give a palindrome (5831385).

The spelling of 13343845 in words is "thirteen million, three hundred forty-three thousand, eight hundred forty-five".