812478874 has 12 divisors (see below), whose sum is σ = 1286238474. Its totient is φ = 384858072.

The previous prime is 812478857. The next prime is 812478883. The reversal of 812478874 is 478874218.

812478874 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., 566773249 + 245705625 = 23807^2 + 15675^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561937 + ... + 563380.

Almost surely, 2^812478874 is an apocalyptic number.

812478874 is a deficient number, since it is larger than the sum of its proper divisors (473759600).

812478874 is a wasteful number, since it uses less digits than its factorization.

812478874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125357 (or 1125338 counting only the distinct ones).

The product of its digits is 802816, while the sum is 49.

The square root of 812478874 is about 28504.0150505153. The cubic root of 812478874 is about 933.1197016439.

The spelling of 812478874 in words is "eight hundred twelve million, four hundred seventy-eight thousand, eight hundred seventy-four".