128116847 has 8 divisors (see below), whose sum is σ = 130968144. Its totient is φ = 125281728.

The previous prime is 128116819. The next prime is 128116861. The reversal of 128116847 is 748611821.

It is a happy number.

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 128116847 - 2¹⁸ = 127854703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128116847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128116817) 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, 12728 + ... + 20450.

It is an arithmetic number, because the mean of its divisors is an integer number (16371018).

Almost surely, 2^128116847 is an apocalyptic number.

128116847 is a deficient number, since it is larger than the sum of its proper divisors (2851297).

128116847 is an equidigital number, since it uses as much as digits as its factorization.

128116847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8089.

The product of its digits is 21504, while the sum is 38.

The square root of 128116847 is about 11318.8712776496. The cubic root of 128116847 is about 504.1217253963.

The spelling of 128116847 in words is "one hundred twenty-eight million, one hundred sixteen thousand, eight hundred forty-seven".