13224394 has 4 divisors (see below), whose sum is σ = 19836594. Its totient is φ = 6612196.

The previous prime is 13224391. The next prime is 13224457. The reversal of 13224394 is 49342231.

13224394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 12510369 + 714025 = 3537^2 + 845^2 .

It is not an unprimeable number, because it can be changed into a prime (13224391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306097 + ... + 3306100.

Almost surely, 2^13224394 is an apocalyptic number.

13224394 is a deficient number, since it is larger than the sum of its proper divisors (6612200).

13224394 is an equidigital number, since it uses as much as digits as its factorization.

13224394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6612199.

The product of its digits is 5184, while the sum is 28.

The square root of 13224394 is about 3636.5359890973. The cubic root of 13224394 is about 236.4786441121.

The spelling of 13224394 in words is "thirteen million, two hundred twenty-four thousand, three hundred ninety-four".