13207224 has 64 divisors (see below), whose sum is σ = 34473600. Its totient is φ = 4212864.

The previous prime is 13207217. The next prime is 13207247. The reversal of 13207224 is 42270231.

It is a self number, because there is not a number n which added to its sum of digits gives 13207224.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94947 + ... + 95085.

It is an arithmetic number, because the mean of its divisors is an integer number (538650).

Almost surely, 2^13207224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13207224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17236800).

13207224 is an abundant number, since it is smaller than the sum of its proper divisors (21266376).

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

13207224 is a wasteful number, since it uses less digits than its factorization.

13207224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 13207224 is about 3634.1744592135. The cubic root of 13207224 is about 236.3762551269.

Adding to 13207224 its reverse (42270231), we get a palindrome (55477455).

It can be divided in two parts, 13207 and 224, that added together give a palindrome (13431).

The spelling of 13207224 in words is "thirteen million, two hundred seven thousand, two hundred twenty-four".