813827036 has 24 divisors (see below), whose sum is σ = 1571134320. Its totient is φ = 365763200.

The previous prime is 813827023. The next prime is 813827039. The reversal of 813827036 is 630728318.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813827039) 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 7 ways as a sum of consecutive naturals, for example, 99995 + ... + 107826.

It is an arithmetic number, because the mean of its divisors is an integer number (65463930).

Almost surely, 2^813827036 is an apocalyptic number.

It is an amenable number.

813827036 is a deficient number, since it is larger than the sum of its proper divisors (757307284).

813827036 is a wasteful number, since it uses less digits than its factorization.

813827036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207925 (or 207923 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 813827036 is about 28527.6538818039. The cubic root of 813827036 is about 933.6355309978.

The spelling of 813827036 in words is "eight hundred thirteen million, eight hundred twenty-seven thousand, thirty-six".