13305345 has 32 divisors (see below), whose sum is σ = 22377600.
Its totient is φ = 6741504.
The previous prime is 13305323. The next prime is 13305349. The reversal of 13305345 is 54350331.
Adding to 13305345 its reverse (54350331), we get a palindrome (67655676).
It is a happy number.
It is not a de Polignac number, because 13305345 - 213 = 13297153 is a prime.
It is not an unprimeable number, because it can be changed into a prime (13305349) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31546 + ... + 31964.
It is an arithmetic number, because the mean of its divisors is an integer number (699300).
Almost surely, 213305345 is an apocalyptic number.
13305345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13305345 is a deficient number, since it is larger than the sum of its proper divisors (9072255).
13305345 is a wasteful number, since it uses less digits than its factorization.
13305345 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 529.
The product of its (nonzero) digits is 2700, while the sum is 24.
The square root of 13305345 is about 3647.6492430057.
The cubic root of 13305345 is about 236.9601848763.
The spelling of 13305345 in words is "thirteen million, three hundred five thousand, three hundred forty-five".