851802 has 32 divisors (see below), whose sum is σ = 2063232. Its totient is φ = 228864.

The previous prime is 851801. The next prime is 851803. The reversal of 851802 is 208158.

It is an interprime number because it is at equal distance from previous prime (851801) and next prime (851803).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118 + ... + 1310.

It is an arithmetic number, because the mean of its divisors is an integer number (64476).

2⁸⁵¹⁸⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031616).

851802 is an abundant number, since it is smaller than the sum of its proper divisors (1211430).

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

851802 is a wasteful number, since it uses less digits than its factorization.

851802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 851802 is about 922.9312000361. The cubic root of 851802 is about 94.7937167585.

It can be divided in two parts, 851 and 802, that added together give a triangular number (1653 = T₅₇).

The spelling of 851802 in words is "eight hundred fifty-one thousand, eight hundred two".