813340 has 24 divisors (see below), whose sum is σ = 1863792. Its totient is φ = 295680.

The previous prime is 813311. The next prime is 813343. The reversal of 813340 is 43318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813343) by changing a digit.

813340 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1629 + ... + 2068.

It is an arithmetic number, because the mean of its divisors is an integer number (77658).

2⁸¹³³⁴⁰ is an apocalyptic number.

It is an amenable number.

813340 is an abundant number, since it is smaller than the sum of its proper divisors (1050452).

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

813340 is a wasteful number, since it uses less digits than its factorization.

813340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717 (or 3715 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 813340 is about 901.8536466634. The cubic root of 813340 is about 93.3449248642.

Adding to 813340 its reverse (43318), we get a palindrome (856658).

The spelling of 813340 in words is "eight hundred thirteen thousand, three hundred forty".