13224500 has 24 divisors (see below), whose sum is σ = 28883400. Its totient is φ = 5289600.

The previous prime is 13224499. The next prime is 13224539. The reversal of 13224500 is 542231.

It can be written as a sum of positive squares in 4 ways, for example, as 2439844 + 10784656 = 1562^2 + 3284^2 .

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 7 ways as a sum of consecutive naturals, for example, 12725 + ... + 13724.

It is an arithmetic number, because the mean of its divisors is an integer number (1203475).

Almost surely, 2^13224500 is an apocalyptic number.

13224500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13224500 is an abundant number, since it is smaller than the sum of its proper divisors (15658900).

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

13224500 is a wasteful number, since it uses less digits than its factorization.

13224500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26468 (or 26456 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13224500 is about 3636.5505633773. The cubic root of 13224500 is about 236.4792759412.

Adding to 13224500 its reverse (542231), we get a palindrome (13766731).

The spelling of 13224500 in words is "thirteen million, two hundred twenty-four thousand, five hundred".