813228536 has 16 divisors (see below), whose sum is σ = 1525106040. Its totient is φ = 406533600.

The previous prime is 813228529. The next prime is 813228551. The reversal of 813228536 is 635822318.

813228536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×813228536² = 1322681303529406592, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 813228536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74075 + ... + 84341.

Almost surely, 2^813228536 is an apocalyptic number.

It is an amenable number.

813228536 is a deficient number, since it is larger than the sum of its proper divisors (711877504).

813228536 is a wasteful number, since it uses less digits than its factorization.

813228536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20174 (or 20170 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 813228536 is about 28517.1621308994. The cubic root of 813228536 is about 933.4066052453.

The spelling of 813228536 in words is "eight hundred thirteen million, two hundred twenty-eight thousand, five hundred thirty-six".