128333849 has 16 divisors (see below), whose sum is σ = 149817600. Its totient is φ = 107661120.

The previous prime is 128333827. The next prime is 128333869. The reversal of 128333849 is 948333821.

It is not a de Polignac number, because 128333849 - 2⁸ = 128333593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128333819) 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 15 ways as a sum of consecutive naturals, for example, 73187 + ... + 74919.

It is an arithmetic number, because the mean of its divisors is an integer number (9363600).

Almost surely, 2^128333849 is an apocalyptic number.

It is an amenable number.

128333849 is a deficient number, since it is larger than the sum of its proper divisors (21483751).

128333849 is a wasteful number, since it uses less digits than its factorization.

128333849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960.

The product of its digits is 124416, while the sum is 41.

The square root of 128333849 is about 11328.4530718011. The cubic root of 128333849 is about 504.4061889394.

The spelling of 128333849 in words is "one hundred twenty-eight million, three hundred thirty-three thousand, eight hundred forty-nine".