128282820 has 48 divisors (see below), whose sum is σ = 363242880. Its totient is φ = 33822976.

The previous prime is 128282801. The next prime is 128282821. The reversal of 128282820 is 28282821.

It is a super-3 number, since 3×128282820³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (128282821) 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, 6672 + ... + 17351.

It is an arithmetic number, because the mean of its divisors is an integer number (7567560).

Almost surely, 2^128282820 is an apocalyptic number.

128282820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128282820 is an abundant number, since it is smaller than the sum of its proper divisors (234960060).

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

128282820 is a wasteful number, since it uses less digits than its factorization.

128282820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24124 (or 24122 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 128282820 is about 11326.2005986121. The cubic root of 128282820 is about 504.3393249075.

Subtracting from 128282820 its reverse (28282821), we obtain a palindrome (99999999).

The spelling of 128282820 in words is "one hundred twenty-eight million, two hundred eighty-two thousand, eight hundred twenty".