128123322 has 32 divisors (see below), whose sum is σ = 275052672. Its totient is φ = 39642624.

The previous prime is 128123321. The next prime is 128123353. The reversal of 128123322 is 223321821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 128123292 and 128123301.

It is not an unprimeable number, because it can be changed into a prime (128123321) 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, 1158 + ... + 16049.

It is an arithmetic number, because the mean of its divisors is an integer number (8595396).

Almost surely, 2^128123322 is an apocalyptic number.

128123322 is an abundant number, since it is smaller than the sum of its proper divisors (146929350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128123322 is a wasteful number, since it uses less digits than its factorization.

128123322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17302.

The product of its digits is 1152, while the sum is 24.

The square root of 128123322 is about 11319.1573007888. The cubic root of 128123322 is about 504.1302179905.

The spelling of 128123322 in words is "one hundred twenty-eight million, one hundred twenty-three thousand, three hundred twenty-two".