13128897 has 8 divisors (see below), whose sum is σ = 17932320. Its totient is φ = 8539040.

The previous prime is 13128877. The next prime is 13128901. The reversal of 13128897 is 79882131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13128897 - 2⁶ = 13128833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13128827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53247 + ... + 53492.

It is an arithmetic number, because the mean of its divisors is an integer number (2241540).

Almost surely, 2^13128897 is an apocalyptic number.

It is an amenable number.

13128897 is a deficient number, since it is larger than the sum of its proper divisors (4803423).

13128897 is a wasteful number, since it uses less digits than its factorization.

13128897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106783.

The product of its digits is 24192, while the sum is 39.

The square root of 13128897 is about 3623.3819837274. The cubic root of 13128897 is about 235.9080425513.

The spelling of 13128897 in words is "thirteen million, one hundred twenty-eight thousand, eight hundred ninety-seven".