13307620 has 12 divisors (see below), whose sum is σ = 27946044. Its totient is φ = 5323040.

The previous prime is 13307603. The next prime is 13307621. The reversal of 13307620 is 2670331.

13307620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10188864 + 3118756 = 3192^2 + 1766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13307591 and 13307600.

It is not an unprimeable number, because it can be changed into a prime (13307621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332671 + ... + 332710.

It is an arithmetic number, because the mean of its divisors is an integer number (2328837).

Almost surely, 2^13307620 is an apocalyptic number.

13307620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13307620 is an abundant number, since it is smaller than the sum of its proper divisors (14638424).

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

13307620 is a wasteful number, since it uses less digits than its factorization.

13307620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665390 (or 665388 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 13307620 is about 3647.9610743537. The cubic root of 13307620 is about 236.9736895668.

Adding to 13307620 its reverse (2670331), we get a palindrome (15977951).

The spelling of 13307620 in words is "thirteen million, three hundred seven thousand, six hundred twenty".