13228897 has 4 divisors (see below), whose sum is σ = 14431536. Its totient is φ = 12026260.

The previous prime is 13228867. The next prime is 13228903. The reversal of 13228897 is 79882231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13228897 - 2¹⁵ = 13196129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13228837) 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, 601303 + ... + 601324.

It is an arithmetic number, because the mean of its divisors is an integer number (3607884).

Almost surely, 2^13228897 is an apocalyptic number.

It is an amenable number.

13228897 is a deficient number, since it is larger than the sum of its proper divisors (1202639).

13228897 is a wasteful number, since it uses less digits than its factorization.

13228897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202638.

The product of its digits is 48384, while the sum is 40.

The square root of 13228897 is about 3637.1550695564. The cubic root of 13228897 is about 236.5054819517.

The spelling of 13228897 in words is "thirteen million, two hundred twenty-eight thousand, eight hundred ninety-seven".