856452 has 24 divisors (see below), whose sum is σ = 2016000. Its totient is φ = 282976.

The previous prime is 856441. The next prime is 856459. The reversal of 856452 is 254658.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 856452.

It is not an unprimeable number, because it can be changed into a prime (856459) by changing a digit.

856452 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1549 + ... + 2027.

It is an arithmetic number, because the mean of its divisors is an integer number (84000).

2⁸⁵⁶⁴⁵² is an apocalyptic number.

It is an amenable number.

856452 is an abundant number, since it is smaller than the sum of its proper divisors (1159548).

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

856452 is a wasteful number, since it uses less digits than its factorization.

856452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 633 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 856452 is about 925.4469190613. The cubic root of 856452 is about 94.9658972700.

The spelling of 856452 in words is "eight hundred fifty-six thousand, four hundred fifty-two".