872857858720 has 96 divisors (see below), whose sum is σ = 2129212624896. Its totient is φ = 337790668800.

The previous prime is 872857858711. The next prime is 872857858721. The reversal of 872857858720 is 27858758278.

It is not an unprimeable number, because it can be changed into a prime (872857858721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20448600 + ... + 20491240.

It is an arithmetic number, because the mean of its divisors is an integer number (22179298176).

Almost surely, 2^872857858720 is an apocalyptic number.

872857858720 is a gapful number since it is divisible by the number (80) 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 872857858720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064606312448).

872857858720 is an abundant number, since it is smaller than the sum of its proper divisors (1256354766176).

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

872857858720 is a wasteful number, since it uses less digits than its factorization.

872857858720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46814 (or 46806 counting only the distinct ones).

The product of its (nonzero) digits is 140492800, while the sum is 67.

The spelling of 872857858720 in words is "eight hundred seventy-two billion, eight hundred fifty-seven million, eight hundred fifty-eight thousand, seven hundred twenty".