815056396 has 36 divisors (see below), whose sum is σ = 1810065096. Its totient is φ = 317553600.

The previous prime is 815056391. The next prime is 815056477. The reversal of 815056396 is 693650518.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (815056391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186865 + ... + 191176.

It is an arithmetic number, because the mean of its divisors is an integer number (50279586).

Almost surely, 2^815056396 is an apocalyptic number.

It is an amenable number.

815056396 is an abundant number, since it is smaller than the sum of its proper divisors (995008700).

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

815056396 is a wasteful number, since it uses less digits than its factorization.

815056396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378070 (or 378061 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 815056396 is about 28549.1925630131. The cubic root of 815056396 is about 934.1054083677.

It can be divided in two parts, 8150 and 56396, that added together give a palindrome (64546).

The spelling of 815056396 in words is "eight hundred fifteen million, fifty-six thousand, three hundred ninety-six".