812040928 has 12 divisors (see below), whose sum is σ = 1598705640. Its totient is φ = 406020448.

The previous prime is 812040917. The next prime is 812040947. The reversal of 812040928 is 829040218.

It is a junction number, because it is equal to n+sod(n) for n = 812040893 and 812040902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12688108 + ... + 12688171.

It is an arithmetic number, because the mean of its divisors is an integer number (133225470).

Almost surely, 2^812040928 is an apocalyptic number.

It is an amenable number.

812040928 is a deficient number, since it is larger than the sum of its proper divisors (786664712).

812040928 is a wasteful number, since it uses less digits than its factorization.

812040928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25376289 (or 25376281 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 812040928 is about 28496.3318341151. The cubic root of 812040928 is about 932.9520133913.

The spelling of 812040928 in words is "eight hundred twelve million, forty thousand, nine hundred twenty-eight".