13147805 has 16 divisors (see below), whose sum is σ = 17293824. Its totient is φ = 9516480.

The previous prime is 13147793. The next prime is 13147807. The reversal of 13147805 is 50874131.

It is not a de Polignac number, because 13147805 - 2⁶ = 13147741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13147807) 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 15 ways as a sum of consecutive naturals, for example, 14804 + ... + 15666.

It is an arithmetic number, because the mean of its divisors is an integer number (1080864).

Almost surely, 2^13147805 is an apocalyptic number.

It is an amenable number.

13147805 is a deficient number, since it is larger than the sum of its proper divisors (4146019).

13147805 is a wasteful number, since it uses less digits than its factorization.

13147805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 13147805 is about 3625.9902095841. The cubic root of 13147805 is about 236.0212383931.

It can be divided in two parts, 1314 and 7805, that added together give a palindrome (9119).

The spelling of 13147805 in words is "thirteen million, one hundred forty-seven thousand, eight hundred five".