13345320 has 32 divisors (see below), whose sum is σ = 40036320. Its totient is φ = 3558720.

The previous prime is 13345303. The next prime is 13345331. The reversal of 13345320 is 2354331.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55486 + ... + 55725.

It is an arithmetic number, because the mean of its divisors is an integer number (1251135).

Almost surely, 2^13345320 is an apocalyptic number.

13345320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13345320 is an abundant number, since it is smaller than the sum of its proper divisors (26691000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13345320 is a wasteful number, since it uses less digits than its factorization.

13345320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111225 (or 111221 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 13345320 is about 3653.1246899059. The cubic root of 13345320 is about 237.1972578400.

Adding to 13345320 its reverse (2354331), we get a palindrome (15699651).

The spelling of 13345320 in words is "thirteen million, three hundred forty-five thousand, three hundred twenty".