868128 has 24 divisors (see below), whose sum is σ = 2279088. Its totient is φ = 289344.

The previous prime is 868123. The next prime is 868151. The reversal of 868128 is 821868.

868128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 868128.

It is not an unprimeable number, because it can be changed into a prime (868121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4426 + ... + 4617.

It is an arithmetic number, because the mean of its divisors is an integer number (94962).

2⁸⁶⁸¹²⁸ is an apocalyptic number.

It is an amenable number.

868128 is an abundant number, since it is smaller than the sum of its proper divisors (1410960).

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

868128 is a wasteful number, since it uses less digits than its factorization.

868128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9056 (or 9048 counting only the distinct ones).

The product of its digits is 6144, while the sum is 33.

The square root of 868128 is about 931.7338675824. The cubic root of 868128 is about 95.3955071743.

It can be divided in two parts, 86812 and 8, that multiplied together give a palindrome (694496).

The spelling of 868128 in words is "eight hundred sixty-eight thousand, one hundred twenty-eight".