128127828 has 24 divisors (see below), whose sum is σ = 305327232. Its totient is φ = 41800384.

The previous prime is 128127823. The next prime is 128127833. The reversal of 128127828 is 828721821.

It is an interprime number because it is at equal distance from previous prime (128127823) and next prime (128127833).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128127821) 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 7 ways as a sum of consecutive naturals, for example, 113025 + ... + 114152.

It is an arithmetic number, because the mean of its divisors is an integer number (12721968).

Almost surely, 2^128127828 is an apocalyptic number.

It is an amenable number.

128127828 is an abundant number, since it is smaller than the sum of its proper divisors (177199404).

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

128127828 is a wasteful number, since it uses less digits than its factorization.

128127828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227231 (or 227229 counting only the distinct ones).

The product of its digits is 28672, while the sum is 39.

The square root of 128127828 is about 11319.3563421248. The cubic root of 128127828 is about 504.1361278803.

The spelling of 128127828 in words is "one hundred twenty-eight million, one hundred twenty-seven thousand, eight hundred twenty-eight".