13305222 has 48 divisors (see below), whose sum is σ = 34175232. Its totient is φ = 3800520.

The previous prime is 13305221. The next prime is 13305223. The reversal of 13305222 is 22250331.

It is an interprime number because it is at equal distance from previous prime (13305221) and next prime (13305223).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13305195 and 13305204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13305221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1447 + ... + 5357.

It is an arithmetic number, because the mean of its divisors is an integer number (711984).

Almost surely, 2^13305222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13305222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17087616).

13305222 is an abundant number, since it is smaller than the sum of its proper divisors (20870010).

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

13305222 is an equidigital number, since it uses as much as digits as its factorization.

13305222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935 (or 3923 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13305222 is about 3647.6323827930. The cubic root of 13305222 is about 236.9594546888.

Adding to 13305222 its reverse (22250331), we get a palindrome (35555553).

The spelling of 13305222 in words is "thirteen million, three hundred five thousand, two hundred twenty-two".