128833941 has 4 divisors (see below), whose sum is σ = 171778592. Its totient is φ = 85889292.

The previous prime is 128833933. The next prime is 128833951. The reversal of 128833941 is 149338821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 128833941 - 2³ = 128833933 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 128833941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128833951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21472321 + ... + 21472326.

It is an arithmetic number, because the mean of its divisors is an integer number (42944648).

Almost surely, 2^128833941 is an apocalyptic number.

It is an amenable number.

128833941 is a deficient number, since it is larger than the sum of its proper divisors (42944651).

128833941 is an equidigital number, since it uses as much as digits as its factorization.

128833941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42944650.

The product of its digits is 41472, while the sum is 39.

The square root of 128833941 is about 11350.5039976205. The cubic root of 128833941 is about 505.0605306001.

The spelling of 128833941 in words is "one hundred twenty-eight million, eight hundred thirty-three thousand, nine hundred forty-one".