13106820 has 24 divisors (see below), whose sum is σ = 36699264. Its totient is φ = 3495136.

The previous prime is 13106801. The next prime is 13106837. The reversal of 13106820 is 2860131.

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, 109164 + ... + 109283.

It is an arithmetic number, because the mean of its divisors is an integer number (1529136).

Almost surely, 2^13106820 is an apocalyptic number.

13106820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13106820 is an abundant number, since it is smaller than the sum of its proper divisors (23592444).

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

13106820 is a wasteful number, since it uses less digits than its factorization.

13106820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218459 (or 218457 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 13106820 is about 3620.3342387133. The cubic root of 13106820 is about 235.7757373559.

Adding to 13106820 its reverse (2860131), we get a palindrome (15966951).

The spelling of 13106820 in words is "thirteen million, one hundred six thousand, eight hundred twenty".