128828700 has 486 divisors, whose sum is σ = 549282552. Its totient is φ = 24710400.

The previous prime is 128828677. The next prime is 128828717. The reversal of 128828700 is 7828821.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 161 ways as a sum of consecutive naturals, for example, 9909894 + ... + 9909906.

Almost surely, 2^128828700 is an apocalyptic number.

128828700 is a gapful number since it is divisible by the number (10) 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 128828700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274641276).

128828700 is an abundant number, since it is smaller than the sum of its proper divisors (420453852).

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

128828700 is a wasteful number, since it uses less digits than its factorization.

128828700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 128828700 is about 11350.2731244671. The cubic root of 128828700 is about 505.0536818404.

It can be divided in two parts, 128 and 828700, that added together give a palindrome (828828).

The spelling of 128828700 in words is "one hundred twenty-eight million, eight hundred twenty-eight thousand, seven hundred".