128106228 has 48 divisors (see below), whose sum is σ = 317237760. Its totient is φ = 40148064.

The previous prime is 128106221. The next prime is 128106233. The reversal of 128106228 is 822601821.

It is a super-2 number, since 2×128106228² = 32822411304775968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128106195 and 128106204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128106221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12351 + ... + 20217.

It is an arithmetic number, because the mean of its divisors is an integer number (6609120).

Almost surely, 2^128106228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128106228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158618880).

128106228 is an abundant number, since it is smaller than the sum of its proper divisors (189131532).

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

128106228 is a wasteful number, since it uses less digits than its factorization.

128106228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7956 (or 7954 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 128106228 is about 11318.4021840541. The cubic root of 128106228 is about 504.1077969223.

The spelling of 128106228 in words is "one hundred twenty-eight million, one hundred six thousand, two hundred twenty-eight".