813236276 has 12 divisors (see below), whose sum is σ = 1506879108. Its totient is φ = 382699392.

The previous prime is 813236269. The next prime is 813236297. The reversal of 813236276 is 672632318.

It can be written as a sum of positive squares in 2 ways, for example, as 744744100 + 68492176 = 27290^2 + 8276^2 .

It is a super-2 number, since 2×813236276² = 1322706481204696352, which contains 22 as substring.

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, 5979611 + ... + 5979746.

It is an arithmetic number, because the mean of its divisors is an integer number (125573259).

Almost surely, 2^813236276 is an apocalyptic number.

It is an amenable number.

813236276 is a deficient number, since it is larger than the sum of its proper divisors (693642832).

813236276 is a wasteful number, since it uses less digits than its factorization.

813236276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11959378 (or 11959376 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 813236276 is about 28517.2978383296. The cubic root of 813236276 is about 933.4095665057.

The spelling of 813236276 in words is "eight hundred thirteen million, two hundred thirty-six thousand, two hundred seventy-six".