128846147 has 4 divisors (see below), whose sum is σ = 131030040. Its totient is φ = 126662256.

The previous prime is 128846143. The next prime is 128846153. The reversal of 128846147 is 741648821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128846147 - 2² = 128846143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128846143) 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 3 ways as a sum of consecutive naturals, for example, 1091858 + ... + 1091975.

It is an arithmetic number, because the mean of its divisors is an integer number (32757510).

Almost surely, 2^128846147 is an apocalyptic number.

128846147 is a deficient number, since it is larger than the sum of its proper divisors (2183893).

128846147 is an equidigital number, since it uses as much as digits as its factorization.

128846147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183892.

The product of its digits is 86016, while the sum is 41.

The square root of 128846147 is about 11351.0416702609. The cubic root of 128846147 is about 505.0764802640.

The spelling of 128846147 in words is "one hundred twenty-eight million, eight hundred forty-six thousand, one hundred forty-seven".