13260020 has 12 divisors (see below), whose sum is σ = 27846084. Its totient is φ = 5304000.

The previous prime is 13260019. The next prime is 13260053. The reversal of 13260020 is 2006231.

13260020 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 7997584 + 5262436 = 2828^2 + 2294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13259977 and 13260004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331481 + ... + 331520.

It is an arithmetic number, because the mean of its divisors is an integer number (2320507).

Almost surely, 2^13260020 is an apocalyptic number.

13260020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13260020 is an abundant number, since it is smaller than the sum of its proper divisors (14586064).

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

13260020 is a wasteful number, since it uses less digits than its factorization.

13260020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663010 (or 663008 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 13260020 is about 3641.4310373808. The cubic root of 13260020 is about 236.6908084434.

Adding to 13260020 its reverse (2006231), we get a palindrome (15266251).

The spelling of 13260020 in words is "thirteen million, two hundred sixty thousand, twenty".