812378344 has 8 divisors (see below), whose sum is σ = 1523209410. Its totient is φ = 406189168.

The previous prime is 812378341. The next prime is 812378351. The reversal of 812378344 is 443873218.

812378344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 754161444 + 58216900 = 27462^2 + 7630^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 812378297 and 812378306.

It is not an unprimeable number, because it can be changed into a prime (812378341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50773639 + ... + 50773654.

Almost surely, 2^812378344 is an apocalyptic number.

It is an amenable number.

812378344 is a deficient number, since it is larger than the sum of its proper divisors (710831066).

812378344 is a wasteful number, since it uses less digits than its factorization.

812378344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101547299 (or 101547295 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 812378344 is about 28502.2515601838. The cubic root of 812378344 is about 933.0812143282.

The spelling of 812378344 in words is "eight hundred twelve million, three hundred seventy-eight thousand, three hundred forty-four".