128872193 has 8 divisors (see below), whose sum is σ = 135801120. Its totient is φ = 121957920.

The previous prime is 128872187. The next prime is 128872207. The reversal of 128872193 is 391278821.

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 128872193 - 2⁶ = 128872129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128872193.

It is not an unprimeable number, because it can be changed into a prime (128872103) 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, 17621 + ... + 23837.

It is an arithmetic number, because the mean of its divisors is an integer number (16975140).

Almost surely, 2^128872193 is an apocalyptic number.

It is an amenable number.

128872193 is a deficient number, since it is larger than the sum of its proper divisors (6928927).

128872193 is a wasteful number, since it uses less digits than its factorization.

128872193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327.

The product of its digits is 48384, while the sum is 41.

The square root of 128872193 is about 11352.1889078715. The cubic root of 128872193 is about 505.1105113829.

The spelling of 128872193 in words is "one hundred twenty-eight million, eight hundred seventy-two thousand, one hundred ninety-three".