13228805 has 16 divisors (see below), whose sum is σ = 16982784. Its totient is φ = 9857280.

The previous prime is 13228801. The next prime is 13228819. The reversal of 13228805 is 50882231.

13228805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13228805 - 2² = 13228801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13228801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8000 + ... + 9510.

It is an arithmetic number, because the mean of its divisors is an integer number (1061424).

Almost surely, 2^13228805 is an apocalyptic number.

It is an amenable number.

13228805 is a deficient number, since it is larger than the sum of its proper divisors (3753979).

13228805 is a wasteful number, since it uses less digits than its factorization.

13228805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 13228805 is about 3637.1424222870. The cubic root of 13228805 is about 236.5049336935.

The spelling of 13228805 in words is "thirteen million, two hundred twenty-eight thousand, eight hundred five".