13106220 has 24 divisors (see below), whose sum is σ = 36697584. Its totient is φ = 3494976.

The previous prime is 13106209. The next prime is 13106227. The reversal of 13106220 is 2260131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13106220.

It is not an unprimeable number, because it can be changed into a prime (13106227) 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, 109159 + ... + 109278.

It is an arithmetic number, because the mean of its divisors is an integer number (1529066).

Almost surely, 2^13106220 is an apocalyptic number.

13106220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13106220 is an abundant number, since it is smaller than the sum of its proper divisors (23591364).

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

13106220 is a wasteful number, since it uses less digits than its factorization.

13106220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218449 (or 218447 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 13106220 is about 3620.2513724878. The cubic root of 13106220 is about 235.7721395444.

Adding to 13106220 its reverse (2260131), we get a palindrome (15366351).

The spelling of 13106220 in words is "thirteen million, one hundred six thousand, two hundred twenty".