13261244 has 12 divisors (see below), whose sum is σ = 23834664. Its totient is φ = 6451344.

The previous prime is 13261231. The next prime is 13261277. The reversal of 13261244 is 44216231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44654 + ... + 44949.

It is an arithmetic number, because the mean of its divisors is an integer number (1986222).

Almost surely, 2^13261244 is an apocalyptic number.

It is an amenable number.

13261244 is a deficient number, since it is larger than the sum of its proper divisors (10573420).

13261244 is a wasteful number, since it uses less digits than its factorization.

13261244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89644 (or 89642 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 13261244 is about 3641.5990992969. The cubic root of 13261244 is about 236.6980910024.

Adding to 13261244 its reverse (44216231), we get a palindrome (57477475).

The spelling of 13261244 in words is "thirteen million, two hundred sixty-one thousand, two hundred forty-four".