128847 has 8 divisors (see below), whose sum is σ = 177840. Its totient is φ = 82880.

The previous prime is 128837. The next prime is 128857. The reversal of 128847 is 748821.

It is an interprime number because it is at equal distance from previous prime (128837) and next prime (128857).

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 128847 - 2⁴ = 128831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128837) 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 7 ways as a sum of consecutive naturals, for example, 654 + ... + 827.

It is an arithmetic number, because the mean of its divisors is an integer number (22230).

2¹²⁸⁸⁴⁷ is an apocalyptic number.

128847 is a deficient number, since it is larger than the sum of its proper divisors (48993).

128847 is a wasteful number, since it uses less digits than its factorization.

128847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its digits is 3584, while the sum is 30.

The square root of 128847 is about 358.9526431161. The cubic root of 128847 is about 50.5077594847.

The spelling of 128847 in words is "one hundred twenty-eight thousand, eight hundred forty-seven".