812940 has 48 divisors (see below), whose sum is σ = 2413152. Its totient is φ = 203776.

The previous prime is 812939. The next prime is 812963. The reversal of 812940 is 49218.

812940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 812940.

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, 622 + ... + 1418.

It is an arithmetic number, because the mean of its divisors is an integer number (50274).

2⁸¹²⁹⁴⁰ 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 812940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1206576).

812940 is an abundant number, since it is smaller than the sum of its proper divisors (1600212).

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

812940 is a wasteful number, since it uses less digits than its factorization.

812940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 812940 is about 901.6318539182. The cubic root of 812940 is about 93.3296200337.

The spelling of 812940 in words is "eight hundred twelve thousand, nine hundred forty".