813912 has 32 divisors (see below), whose sum is σ = 2220480. Its totient is φ = 246560.

The previous prime is 813907. The next prime is 813931. The reversal of 813912 is 219318.

813912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 813912.

It is an unprimeable number.

813912 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, 1278 + ... + 1805.

It is an arithmetic number, because the mean of its divisors is an integer number (69390).

2⁸¹³⁹¹² is an apocalyptic number.

It is an amenable number.

813912 is an abundant number, since it is smaller than the sum of its proper divisors (1406568).

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

813912 is a wasteful number, since it uses less digits than its factorization.

813912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103 (or 3099 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 813912 is about 902.1707155522. The cubic root of 813912 is about 93.3668020559.

It can be divided in two parts, 81 and 3912, that added together give a palindrome (3993).

The spelling of 813912 in words is "eight hundred thirteen thousand, nine hundred twelve".