812380940 has 48 divisors (see below), whose sum is σ = 1995071232. Its totient is φ = 272051136.

The previous prime is 812380927. The next prime is 812380969. The reversal of 812380940 is 49083218.

It is a happy number.

812380940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 812380940.

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, 61454 + ... + 73493.

It is an arithmetic number, because the mean of its divisors is an integer number (41563984).

Almost surely, 2^812380940 is an apocalyptic number.

It is an amenable number.

812380940 is an abundant number, since it is smaller than the sum of its proper divisors (1182690292).

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

812380940 is a wasteful number, since it uses less digits than its factorization.

812380940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135006 (or 135004 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 812380940 is about 28502.2971004093. The cubic root of 812380940 is about 933.0822082313.

The spelling of 812380940 in words is "eight hundred twelve million, three hundred eighty thousand, nine hundred forty".