13224913 has 4 divisors (see below), whose sum is σ = 14242228. Its totient is φ = 12207600.

The previous prime is 13224901. The next prime is 13224917. The reversal of 13224913 is 31942231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1507984 + 11716929 = 1228^2 + 3423^2 .

It is a cyclic number.

It is not a de Polignac number, because 13224913 - 2⁵ = 13224881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13224917) by changing a digit.

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, 508638 + ... + 508663.

It is an arithmetic number, because the mean of its divisors is an integer number (3560557).

Almost surely, 2^13224913 is an apocalyptic number.

13224913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13224913 is a deficient number, since it is larger than the sum of its proper divisors (1017315).

13224913 is a wasteful number, since it uses less digits than its factorization.

13224913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017314.

The product of its digits is 1296, while the sum is 25.

The square root of 13224913 is about 3636.6073475150. The cubic root of 13224913 is about 236.4817376581.

The spelling of 13224913 in words is "thirteen million, two hundred twenty-four thousand, nine hundred thirteen".