813268 has 6 divisors (see below), whose sum is σ = 1423226. Its totient is φ = 406632.

The previous prime is 813251. The next prime is 813269. The reversal of 813268 is 862318.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 35344 = 882^2 + 188^2 .

It is a super-2 number, since 2×813268² = 1322809679648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101655 + ... + 101662.

2⁸¹³²⁶⁸ is an apocalyptic number.

It is an amenable number.

813268 is a deficient number, since it is larger than the sum of its proper divisors (609958).

813268 is a wasteful number, since it uses less digits than its factorization.

813268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203321 (or 203319 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 813268 is about 901.8137279949. The cubic root of 813268 is about 93.3421703651.

It can be divided in two parts, 813 and 268, that added together give a triangular number (1081 = T₄₆).

The spelling of 813268 in words is "eight hundred thirteen thousand, two hundred sixty-eight".