13401224 has 16 divisors (see below), whose sum is σ = 25166220. Its totient is φ = 6690240.

The previous prime is 13401217. The next prime is 13401233. The reversal of 13401224 is 42210431.

It can be written as a sum of positive squares in 2 ways, for example, as 12124324 + 1276900 = 3482^2 + 1130^2 .

It is a plaindrome in base 15.

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 3 ways as a sum of consecutive naturals, for example, 9014 + ... + 10394.

Almost surely, 2^13401224 is an apocalyptic number.

It is an amenable number.

13401224 is a deficient number, since it is larger than the sum of its proper divisors (11764996).

13401224 is a wasteful number, since it uses less digits than its factorization.

13401224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600 (or 2596 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13401224 is about 3660.7682253866. The cubic root of 13401224 is about 237.5280055618.

Adding to 13401224 its reverse (42210431), we get a palindrome (55611655).

The spelling of 13401224 in words is "thirteen million, four hundred one thousand, two hundred twenty-four".