812730015 has 48 divisors (see below), whose sum is σ = 1437920640. Its totient is φ = 424532160.

The previous prime is 812729993. The next prime is 812730019. The reversal of 812730015 is 510037218.

812730015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 812730015 - 2¹⁰ = 812728991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812730019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1175820 + ... + 1176510.

It is an arithmetic number, because the mean of its divisors is an integer number (29956680).

Almost surely, 2^812730015 is an apocalyptic number.

812730015 is a deficient number, since it is larger than the sum of its proper divisors (625190625).

812730015 is a wasteful number, since it uses less digits than its factorization.

812730015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 812730015 is about 28508.4200719717. The cubic root of 812730015 is about 933.2158356198.

The spelling of 812730015 in words is "eight hundred twelve million, seven hundred thirty thousand, fifteen".