812748422 has 4 divisors (see below), whose sum is σ = 1219122636. Its totient is φ = 406374210.

The previous prime is 812748413. The next prime is 812748439. The reversal of 812748422 is 224847218.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203187104 + ... + 203187107.

It is an arithmetic number, because the mean of its divisors is an integer number (304780659).

Almost surely, 2^812748422 is an apocalyptic number.

812748422 is a deficient number, since it is larger than the sum of its proper divisors (406374214).

812748422 is a wasteful number, since it uses less digits than its factorization.

812748422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406374213.

The product of its digits is 57344, while the sum is 38.

The square root of 812748422 is about 28508.7429045898. The cubic root of 812748422 is about 933.2228808352. Note that the first 3 decimals are identical.

The spelling of 812748422 in words is "eight hundred twelve million, seven hundred forty-eight thousand, four hundred twenty-two".