812248306 has 8 divisors (see below), whose sum is σ = 1238345964. Its totient is φ = 399466320.

The previous prime is 812248301. The next prime is 812248331. The reversal of 812248306 is 603842218.

It can be written as a sum of positive squares in 2 ways, for example, as 811737081 + 511225 = 28491^2 + 715^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (812248301) 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, 3328765 + ... + 3329008.

Almost surely, 2^812248306 is an apocalyptic number.

812248306 is a deficient number, since it is larger than the sum of its proper divisors (426097658).

812248306 is a wasteful number, since it uses less digits than its factorization.

812248306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6657836.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 812248306 is about 28499.9702806863. The cubic root of 812248306 is about 933.0314253390.

The spelling of 812248306 in words is "eight hundred twelve million, two hundred forty-eight thousand, three hundred six".