128839034 has 8 divisors (see below), whose sum is σ = 195172308. Its totient is φ = 63781600.

The previous prime is 128839033. The next prime is 128839043. The reversal of 128839034 is 430938821.

It can be written as a sum of positive squares in 2 ways, for example, as 103083409 + 25755625 = 10153^2 + 5075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (128839033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318707 + ... + 319110.

Almost surely, 2^128839034 is an apocalyptic number.

128839034 is a deficient number, since it is larger than the sum of its proper divisors (66333274).

128839034 is a wasteful number, since it uses less digits than its factorization.

128839034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637920.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 128839034 is about 11350.7283466745. The cubic root of 128839034 is about 505.0671857806.

The spelling of 128839034 in words is "one hundred twenty-eight million, eight hundred thirty-nine thousand, thirty-four".