812730038 has 16 divisors (see below), whose sum is σ = 1274357760. Its totient is φ = 388276200.

The previous prime is 812730019. The next prime is 812730041. The reversal of 812730038 is 830037218.

It is a super-2 number, since 2×812730038² = 1321060229334962888, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 812729986 and 812730013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78068 + ... + 87863.

It is an arithmetic number, because the mean of its divisors is an integer number (79647360).

Almost surely, 2^812730038 is an apocalyptic number.

812730038 is a deficient number, since it is larger than the sum of its proper divisors (461627722).

812730038 is a wasteful number, since it uses less digits than its factorization.

812730038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166043.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 812730038 is about 28508.4204753613. The cubic root of 812730038 is about 933.2158444230.

The spelling of 812730038 in words is "eight hundred twelve million, seven hundred thirty thousand, thirty-eight".