128344833 has 6 divisors (see below), whose sum is σ = 185386994. Its totient is φ = 85563216.

The previous prime is 128344817. The next prime is 128344847. The reversal of 128344833 is 338443821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 106750224 + 21594609 = 10332^2 + 4647^2 .

It is not a de Polignac number, because 128344833 - 2⁴ = 128344817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128344813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7130260 + ... + 7130277.

Almost surely, 2^128344833 is an apocalyptic number.

It is an amenable number.

128344833 is a deficient number, since it is larger than the sum of its proper divisors (57042161).

128344833 is a wasteful number, since it uses less digits than its factorization.

128344833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14260543 (or 14260540 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 128344833 is about 11328.9378584226. The cubic root of 128344833 is about 504.4205791141.

The spelling of 128344833 in words is "one hundred twenty-eight million, three hundred forty-four thousand, eight hundred thirty-three".