13206620 has 96 divisors (see below), whose sum is σ = 34836480. Its totient is φ = 4101120.

The previous prime is 13206607. The next prime is 13206631. The reversal of 13206620 is 2660231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13206592 and 13206601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73691 + ... + 73869.

It is an arithmetic number, because the mean of its divisors is an integer number (362880).

Almost surely, 2^13206620 is an apocalyptic number.

13206620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13206620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17418240).

13206620 is an abundant number, since it is smaller than the sum of its proper divisors (21629860).

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

13206620 is a wasteful number, since it uses less digits than its factorization.

13206620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13206620 is about 3634.0913582352. The cubic root of 13206620 is about 236.3726517092.

Adding to 13206620 its reverse (2660231), we get a palindrome (15866851).

The spelling of 13206620 in words is "thirteen million, two hundred six thousand, six hundred twenty".