812274940 has 12 divisors (see below), whose sum is σ = 1705777416. Its totient is φ = 324909968.

The previous prime is 812274937. The next prime is 812274941. The reversal of 812274940 is 49472218.

812274940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 812274940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812274941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20306854 + ... + 20306893.

It is an arithmetic number, because the mean of its divisors is an integer number (142148118).

Almost surely, 2^812274940 is an apocalyptic number.

It is an amenable number.

812274940 is an abundant number, since it is smaller than the sum of its proper divisors (893502476).

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

812274940 is a wasteful number, since it uses less digits than its factorization.

812274940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40613756 (or 40613754 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 812274940 is about 28500.4375405010. The cubic root of 812274940 is about 933.0416234058.

The spelling of 812274940 in words is "eight hundred twelve million, two hundred seventy-four thousand, nine hundred forty".