13005845 has 8 divisors (see below), whose sum is σ = 15626400. Its totient is φ = 10391760.

The previous prime is 13005767. The next prime is 13005859. The reversal of 13005845 is 54850031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13005845 - 2⁸ = 13005589 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6806 + ... + 8504.

It is an arithmetic number, because the mean of its divisors is an integer number (1953300).

Almost surely, 2^13005845 is an apocalyptic number.

It is an amenable number.

13005845 is a deficient number, since it is larger than the sum of its proper divisors (2620555).

13005845 is a wasteful number, since it uses less digits than its factorization.

13005845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 13005845 is about 3606.3617400366. The cubic root of 13005845 is about 235.1687033669.

Adding to 13005845 its reverse (54850031), we get a palindrome (67855876).

It can be divided in two parts, 13005 and 845, that multiplied together give a square (10989225 = 3315²).

The spelling of 13005845 in words is "thirteen million, five thousand, eight hundred forty-five".