13260820 has 24 divisors (see below), whose sum is σ = 28038528. Its totient is φ = 5268000.

The previous prime is 13260809. The next prime is 13260823. The reversal of 13260820 is 2806231.

It is a junction number, because it is equal to n+sod(n) for n = 13260791 and 13260800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13260823) 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, 825 + ... + 5215.

It is an arithmetic number, because the mean of its divisors is an integer number (1168272).

Almost surely, 2^13260820 is an apocalyptic number.

13260820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13260820 is an abundant number, since it is smaller than the sum of its proper divisors (14777708).

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

13260820 is a wasteful number, since it uses less digits than its factorization.

13260820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551 (or 4549 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13260820 is about 3641.5408826484. The cubic root of 13260820 is about 236.6955683366.

The spelling of 13260820 in words is "thirteen million, two hundred sixty thousand, eight hundred twenty".