856284 has 48 divisors (see below), whose sum is σ = 2352000. Its totient is φ = 239040.

The previous prime is 856279. The next prime is 856301. The reversal of 856284 is 482658.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1467 + ... + 1965.

It is an arithmetic number, because the mean of its divisors is an integer number (49000).

2⁸⁵⁶²⁸⁴ 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 856284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176000).

856284 is an abundant number, since it is smaller than the sum of its proper divisors (1495716).

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

856284 is a wasteful number, since it uses less digits than its factorization.

856284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 528 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 856284 is about 925.3561476534. The cubic root of 856284 is about 94.9596874205.

It can be divided in two parts, 8562 and 84, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 856284 in words is "eight hundred fifty-six thousand, two hundred eighty-four".