128872296 has 80 divisors (see below), whose sum is σ = 412542240. Its totient is φ = 36819360.

The previous prime is 128872253. The next prime is 128872297. The reversal of 128872296 is 692278821.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (128872297) 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 19 ways as a sum of consecutive naturals, for example, 9670 + ... + 18741.

It is an arithmetic number, because the mean of its divisors is an integer number (5156778).

Almost surely, 2^128872296 is an apocalyptic number.

It is an amenable number.

128872296 is an abundant number, since it is smaller than the sum of its proper divisors (283669944).

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

128872296 is a wasteful number, since it uses less digits than its factorization.

128872296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28436 (or 28423 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 128872296 is about 11352.1934444406. The cubic root of 128872296 is about 505.1106459513.

The spelling of 128872296 in words is "one hundred twenty-eight million, eight hundred seventy-two thousand, two hundred ninety-six".