851008872 has 96 divisors (see below), whose sum is σ = 2532578400. Its totient is φ = 237476736.

The previous prime is 851008867. The next prime is 851008883. The reversal of 851008872 is 278800158.

It is a super-2 number, since 2×851008872² = 1448432200445424768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 851008872.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42154 + ... + 58982.

It is an arithmetic number, because the mean of its divisors is an integer number (26381025).

Almost surely, 2^851008872 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 851008872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266289200).

851008872 is an abundant number, since it is smaller than the sum of its proper divisors (1681569528).

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

851008872 is a wasteful number, since it uses less digits than its factorization.

851008872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16895 (or 16884 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 851008872 is about 29172.0563553549. The cubic root of 851008872 is about 947.6428625003.

The spelling of 851008872 in words is "eight hundred fifty-one million, eight thousand, eight hundred seventy-two".