851392 has 28 divisors (see below), whose sum is σ = 1728216. Its totient is φ = 416000.

The previous prime is 851387. The next prime is 851393. The reversal of 851392 is 293158.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 851392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3267 + ... + 3517.

It is an arithmetic number, because the mean of its divisors is an integer number (61722).

2⁸⁵¹³⁹² 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 851392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864108).

851392 is an abundant number, since it is smaller than the sum of its proper divisors (876824).

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

851392 is a wasteful number, since it uses less digits than its factorization.

851392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 306 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 851392 is about 922.7090549030. The cubic root of 851392 is about 94.7785052182.

The spelling of 851392 in words is "eight hundred fifty-one thousand, three hundred ninety-two".