13230220 has 24 divisors (see below), whose sum is σ = 27897408. Its totient is φ = 5270400.

The previous prime is 13230179. The next prime is 13230223. The reversal of 13230220 is 2203231.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13230220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230223) 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, 4200 + ... + 6640.

It is an arithmetic number, because the mean of its divisors is an integer number (1162392).

Almost surely, 2^13230220 is an apocalyptic number.

13230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13230220 is an abundant number, since it is smaller than the sum of its proper divisors (14667188).

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

13230220 is a wasteful number, since it uses less digits than its factorization.

13230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2719 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 13230220 is about 3637.3369379259. The cubic root of 13230220 is about 236.5133658623.

Adding to 13230220 its reverse (2203231), we get a palindrome (15433451).

The spelling of 13230220 in words is "thirteen million, two hundred thirty thousand, two hundred twenty".