13224445 has 16 divisors (see below), whose sum is σ = 17644032. Its totient is φ = 9449280.

The previous prime is 13224391. The next prime is 13224457. The reversal of 13224445 is 54442231.

It is a happy number.

It is not a de Polignac number, because 13224445 - 2⁹ = 13223933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1267 + ... + 5296.

It is an arithmetic number, because the mean of its divisors is an integer number (1102752).

Almost surely, 2^13224445 is an apocalyptic number.

It is an amenable number.

13224445 is a deficient number, since it is larger than the sum of its proper divisors (4419587).

13224445 is a wasteful number, since it uses less digits than its factorization.

13224445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612.

The product of its digits is 3840, while the sum is 25.

The square root of 13224445 is about 3636.5430012582. The cubic root of 13224445 is about 236.4789481058.

Adding to 13224445 its reverse (54442231), we get a palindrome (67666676).

The spelling of 13224445 in words is "thirteen million, two hundred twenty-four thousand, four hundred forty-five".