128348287 has 8 divisors (see below), whose sum is σ = 139762800. Its totient is φ = 117399744.

The previous prime is 128348243. The next prime is 128348293. The reversal of 128348287 is 782843821.

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 128348287 - 2¹⁹ = 127823999 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 (128348237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115918 + ... + 117019.

It is an arithmetic number, because the mean of its divisors is an integer number (17470350).

Almost surely, 2^128348287 is an apocalyptic number.

128348287 is a deficient number, since it is larger than the sum of its proper divisors (11414513).

128348287 is a wasteful number, since it uses less digits than its factorization.

128348287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232985.

The product of its digits is 172032, while the sum is 43.

The square root of 128348287 is about 11329.0902988722. The cubic root of 128348287 is about 504.4251040413.

The spelling of 128348287 in words is "one hundred twenty-eight million, three hundred forty-eight thousand, two hundred eighty-seven".