836420 has 24 divisors (see below), whose sum is σ = 1892184. Its totient is φ = 308736.

The previous prime is 836413. The next prime is 836449. The reversal of 836420 is 24638.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 103684 + 732736 = 322^2 + 856^2 .

It is an unprimeable number.

836420 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 7 ways as a sum of consecutive naturals, for example, 1349 + ... + 1868.

It is an arithmetic number, because the mean of its divisors is an integer number (78841).

2⁸³⁶⁴²⁰ is an apocalyptic number.

It is an amenable number.

836420 is an abundant number, since it is smaller than the sum of its proper divisors (1055764).

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

836420 is a wasteful number, since it uses less digits than its factorization.

836420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239 (or 3237 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 836420 is about 914.5600034990. The cubic root of 836420 is about 94.2196463126.

The spelling of 836420 in words is "eight hundred thirty-six thousand, four hundred twenty".