846840 has 32 divisors (see below), whose sum is σ = 2540880. Its totient is φ = 225792.

The previous prime is 846823. The next prime is 846841. The reversal of 846840 is 48648.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 846798 and 846807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (846841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3409 + ... + 3648.

2⁸⁴⁶⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

846840 is an abundant number, since it is smaller than the sum of its proper divisors (1694040).

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

846840 is a wasteful number, since it uses less digits than its factorization.

846840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7071 (or 7067 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 846840 is about 920.2390993649. The cubic root of 846840 is about 94.6092909838.

The spelling of 846840 in words is "eight hundred forty-six thousand, eight hundred forty".