128220295 has 8 divisors (see below), whose sum is σ = 175845024. Its totient is φ = 87922464.

The previous prime is 128220293. The next prime is 128220299. The reversal of 128220295 is 592022821.

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

It is not a de Polignac number, because 128220295 - 2¹ = 128220293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128220293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1831684 + ... + 1831753.

It is an arithmetic number, because the mean of its divisors is an integer number (21980628).

Almost surely, 2^128220295 is an apocalyptic number.

128220295 is a deficient number, since it is larger than the sum of its proper divisors (47624729).

128220295 is an equidigital number, since it uses as much as digits as its factorization.

128220295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663449.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 128220295 is about 11323.4400691663. The cubic root of 128220295 is about 504.2573733236.

The spelling of 128220295 in words is "one hundred twenty-eight million, two hundred twenty thousand, two hundred ninety-five".