812198344 has 16 divisors (see below), whose sum is σ = 1528073820. Its totient is φ = 404712000.

The previous prime is 812198327. The next prime is 812198351. The reversal of 812198344 is 443891218.

It can be written as a sum of positive squares in 2 ways, for example, as 656896900 + 155301444 = 25630^2 + 12462^2 .

It is a super-2 number, since 2×812198344² = 1319332299992684672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 812198297 and 812198306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170907 + ... + 175594.

Almost surely, 2^812198344 is an apocalyptic number.

It is an amenable number.

812198344 is a deficient number, since it is larger than the sum of its proper divisors (715875476).

812198344 is a wasteful number, since it uses less digits than its factorization.

812198344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346800 (or 346796 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 812198344 is about 28499.0937399771. The cubic root of 812198344 is about 933.0122944601.

The spelling of 812198344 in words is "eight hundred twelve million, one hundred ninety-eight thousand, three hundred forty-four".