128043828 has 120 divisors (see below), whose sum is σ = 375417504. Its totient is φ = 37713600.

The previous prime is 128043827. The next prime is 128043833. The reversal of 128043828 is 828340821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 128043792 and 128043801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128043821) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 131383 + ... + 132353.

Almost surely, 2^128043828 is an apocalyptic number.

128043828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128043828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187708752).

128043828 is an abundant number, since it is smaller than the sum of its proper divisors (247373676).

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

128043828 is a wasteful number, since it uses less digits than its factorization.

128043828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 128043828 is about 11315.6452754582. The cubic root of 128043828 is about 504.0259340397.

The spelling of 128043828 in words is "one hundred twenty-eight million, forty-three thousand, eight hundred twenty-eight".