128140008 has 64 divisors (see below), whose sum is σ = 329313600. Its totient is φ = 41533440.

The previous prime is 128140003. The next prime is 128140031. The reversal of 128140008 is 800041821.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 128140008.

It is not an unprimeable number, because it can be changed into a prime (128140003) 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, 166248 + ... + 167016.

It is an arithmetic number, because the mean of its divisors is an integer number (5145525).

Almost surely, 2^128140008 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 128140008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164656800).

128140008 is an abundant number, since it is smaller than the sum of its proper divisors (201173592).

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

128140008 is a wasteful number, since it uses less digits than its factorization.

128140008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 128140008 is about 11319.8943457967. The cubic root of 128140008 is about 504.1521019888.

Adding to 128140008 its reverse (800041821), we get a palindrome (928181829).

The spelling of 128140008 in words is "one hundred twenty-eight million, one hundred forty thousand, eight".