128884068 has 96 divisors (see below), whose sum is σ = 355622400. Its totient is φ = 40251168.

The previous prime is 128884057. The next prime is 128884069. The reversal of 128884068 is 860488821.

It is a happy number.

It is a super-2 number, since 2×128884068² = 33222205968457248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128884069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219271 + ... + 219857.

It is an arithmetic number, because the mean of its divisors is an integer number (3704400).

Almost surely, 2^128884068 is an apocalyptic number.

128884068 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 128884068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177811200).

128884068 is an abundant number, since it is smaller than the sum of its proper divisors (226738332).

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

128884068 is a wasteful number, since it uses less digits than its factorization.

128884068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The square root of 128884068 is about 11352.7119227082. The cubic root of 128884068 is about 505.1260254696.

The spelling of 128884068 in words is "one hundred twenty-eight million, eight hundred eighty-four thousand, sixty-eight".