128031828 has 48 divisors (see below), whose sum is σ = 317157120. Its totient is φ = 40059904.

The previous prime is 128031821. The next prime is 128031833. The reversal of 128031828 is 828130821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128031821) 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, 115525 + ... + 116627.

It is an arithmetic number, because the mean of its divisors is an integer number (6607440).

Almost surely, 2^128031828 is an apocalyptic number.

It is an amenable number.

128031828 is an abundant number, since it is smaller than the sum of its proper divisors (189125292).

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

128031828 is a wasteful number, since it uses less digits than its factorization.

128031828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 128031828 is about 11315.1150237194. The cubic root of 128031828 is about 504.0101881286.

The spelling of 128031828 in words is "one hundred twenty-eight million, thirty-one thousand, eight hundred twenty-eight".