851922 has 48 divisors (see below), whose sum is σ = 2021760. Its totient is φ = 258336.

The previous prime is 851899. The next prime is 851953. The reversal of 851922 is 229158.

It is an Ulam number.

It is an unprimeable number.

851922 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16048 + ... + 16100.

It is an arithmetic number, because the mean of its divisors is an integer number (42120).

2⁸⁵¹⁹²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010880).

851922 is an abundant number, since it is smaller than the sum of its proper divisors (1169838).

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

851922 is a wasteful number, since it uses less digits than its factorization.

851922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 124 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 851922 is about 922.9962080095. The cubic root of 851922 is about 94.7981679932.

The spelling of 851922 in words is "eight hundred fifty-one thousand, nine hundred twenty-two".