834420 has 24 divisors (see below), whose sum is σ = 2336544. Its totient is φ = 222496.

The previous prime is 834367. The next prime is 834433. The reversal of 834420 is 24438.

It is a happy number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

834420 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, 6894 + ... + 7013.

It is an arithmetic number, because the mean of its divisors is an integer number (97356).

2⁸³⁴⁴²⁰ is an apocalyptic number.

It is an amenable number.

834420 is an abundant number, since it is smaller than the sum of its proper divisors (1502124).

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

834420 is a wasteful number, since it uses less digits than its factorization.

834420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13919 (or 13917 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 834420 is about 913.4659271150. The cubic root of 834420 is about 94.1444888209.

Adding to 834420 its reverse (24438), we get a palindrome (858858).

The spelling of 834420 in words is "eight hundred thirty-four thousand, four hundred twenty".