13320045 has 48 divisors (see below), whose sum is σ = 25247040. Its totient is φ = 6718464.

The previous prime is 13320029. The next prime is 13320071. The reversal of 13320045 is 54002331.

It is not a de Polignac number, because 13320045 - 2⁴ = 13320029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22797 + ... + 23373.

It is an arithmetic number, because the mean of its divisors is an integer number (525980).

Almost surely, 2^13320045 is an apocalyptic number.

13320045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13320045 is a deficient number, since it is larger than the sum of its proper divisors (11926995).

13320045 is an equidigital number, since it uses as much as digits as its factorization.

13320045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13320045 is about 3649.6636831357. The cubic root of 13320045 is about 237.0474188086.

Adding to 13320045 its reverse (54002331), we get a palindrome (67322376).

The spelling of 13320045 in words is "thirteen million, three hundred twenty thousand, forty-five".