815000730 has 32 divisors (see below), whose sum is σ = 1985200704. Its totient is φ = 214089216.

The previous prime is 815000707. The next prime is 815000731. The reversal of 815000730 is 37000518.

815000730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 815000730.

It is not an unprimeable number, because it can be changed into a prime (815000731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200727 + ... + 204746.

It is an arithmetic number, because the mean of its divisors is an integer number (62037522).

Almost surely, 2^815000730 is an apocalyptic number.

815000730 is an abundant number, since it is smaller than the sum of its proper divisors (1170199974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

815000730 is a wasteful number, since it uses less digits than its factorization.

815000730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405550.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 815000730 is about 28548.2176326299. The cubic root of 815000730 is about 934.0841423155.

The spelling of 815000730 in words is "eight hundred fifteen million, seven hundred thirty", and thus it is an aban number.