812789030 has 16 divisors (see below), whose sum is σ = 1540021680. Its totient is φ = 308004192.

The previous prime is 812788987. The next prime is 812789041. The reversal of 812789030 is 30987218.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an alternating number because its digits alternate between even and odd.

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, 2138729 + ... + 2139108.

It is an arithmetic number, because the mean of its divisors is an integer number (96251355).

Almost surely, 2^812789030 is an apocalyptic number.

812789030 is a deficient number, since it is larger than the sum of its proper divisors (727232650).

812789030 is a wasteful number, since it uses less digits than its factorization.

812789030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277863.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 812789030 is about 28509.4550982652. The cubic root of 812789030 is about 933.2384230303.

The spelling of 812789030 in words is "eight hundred twelve million, seven hundred eighty-nine thousand, thirty".