13020304 has 40 divisors (see below), whose sum is σ = 28480320. Its totient is φ = 5712000.

The previous prime is 13020251. The next prime is 13020307. The reversal of 13020304 is 40302031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3829 + ... + 6379.

It is an arithmetic number, because the mean of its divisors is an integer number (712008).

Almost surely, 2^13020304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13020304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14240160).

13020304 is an abundant number, since it is smaller than the sum of its proper divisors (15460016).

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

13020304 is a wasteful number, since it uses less digits than its factorization.

13020304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599 (or 2593 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 13020304 is about 3608.3658351115. The cubic root of 13020304 is about 235.2558191979.

Adding to 13020304 its reverse (40302031), we get a palindrome (53322335).

The spelling of 13020304 in words is "thirteen million, twenty thousand, three hundred four".