128322635 has 16 divisors (see below), whose sum is σ = 183638016. Its totient is φ = 84166368.

The previous prime is 128322617. The next prime is 128322641. The reversal of 128322635 is 536223821.

It is a cyclic number.

It is not a de Polignac number, because 128322635 - 2⁸ = 128322379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 78899 + ... + 80508.

It is an arithmetic number, because the mean of its divisors is an integer number (11477376).

Almost surely, 2^128322635 is an apocalyptic number.

128322635 is a deficient number, since it is larger than the sum of its proper divisors (55315381).

128322635 is a wasteful number, since it uses less digits than its factorization.

128322635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159442.

The product of its digits is 17280, while the sum is 32.

The square root of 128322635 is about 11327.9581125638. The cubic root of 128322635 is about 504.3914965939.

The spelling of 128322635 in words is "one hundred twenty-eight million, three hundred twenty-two thousand, six hundred thirty-five".