868128192 has 196 divisors, whose sum is σ = 2698485840. Its totient is φ = 276452352.

The previous prime is 868128139. The next prime is 868128227. The reversal of 868128192 is 291821868.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1072684 + ... + 1073492.

Almost surely, 2^868128192 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 868128192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349242920).

868128192 is an abundant number, since it is smaller than the sum of its proper divisors (1830357648).

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

868128192 is an equidigital number, since it uses as much as digits as its factorization.

868128192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 837 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 868128192 is about 29464.0152049920. The cubic root of 868128192 is about 953.9551420702.

The spelling of 868128192 in words is "eight hundred sixty-eight million, one hundred twenty-eight thousand, one hundred ninety-two".