13306244 has 36 divisors (see below), whose sum is σ = 28033740. Its totient is φ = 5503680.

The previous prime is 13306243. The next prime is 13306247. The reversal of 13306244 is 44260331.

13306244 = T₂₁₆ + T₂₁₇ + ... + T₄₄₇.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7840000 + 5466244 = 2800^2 + 2338^2 .

It is a super-2 number, since 2×13306244² = 354112258775072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13306243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4514 + ... + 6854.

It is an arithmetic number, because the mean of its divisors is an integer number (778715).

Almost surely, 2^13306244 is an apocalyptic number.

13306244 is a gapful number since it is divisible by the number (14) 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 13306244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14016870).

13306244 is an abundant number, since it is smaller than the sum of its proper divisors (14727496).

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

13306244 is a wasteful number, since it uses less digits than its factorization.

13306244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388 (or 2379 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 13306244 is about 3647.7724709746. The cubic root of 13306244 is about 236.9655216391.

Adding to 13306244 its reverse (44260331), we get a palindrome (57566575).

The spelling of 13306244 in words is "thirteen million, three hundred six thousand, two hundred forty-four".