12803505 has 64 divisors (see below), whose sum is σ = 24772608. Its totient is φ = 5564160.

The previous prime is 12803503. The next prime is 12803509. The reversal of 12803505 is 50530821.

It is not a de Polignac number, because 12803505 - 2¹ = 12803503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12803503) 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 63 ways as a sum of consecutive naturals, for example, 100752 + ... + 100878.

It is an arithmetic number, because the mean of its divisors is an integer number (387072).

Almost surely, 2^12803505 is an apocalyptic number.

12803505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12803505 is a deficient number, since it is larger than the sum of its proper divisors (11969103).

12803505 is a wasteful number, since it uses less digits than its factorization.

12803505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 12803505 is about 3578.1985691127. The cubic root of 12803505 is about 233.9427685296.

The spelling of 12803505 in words is "twelve million, eight hundred three thousand, five hundred five".