812830990 has 16 divisors (see below), whose sum is σ = 1463462640. Its totient is φ = 325050880.

The previous prime is 812830987. The next prime is 812831011. The reversal of 812830990 is 99038218.

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 in 7 ways as a sum of consecutive naturals, for example, 46941 + ... + 61879.

It is an arithmetic number, because the mean of its divisors is an integer number (91466415).

Almost surely, 2^812830990 is an apocalyptic number.

812830990 is a deficient number, since it is larger than the sum of its proper divisors (650631650).

812830990 is a wasteful number, since it uses less digits than its factorization.

812830990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20387.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 812830990 is about 28510.1909849794. The cubic root of 812830990 is about 933.2544821424.

The spelling of 812830990 in words is "eight hundred twelve million, eight hundred thirty thousand, nine hundred ninety".