813430 has 8 divisors (see below), whose sum is σ = 1464192. Its totient is φ = 325368.

The previous prime is 813427. The next prime is 813443. The reversal of 813430 is 34318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 813398 and 813407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40662 + ... + 40681.

It is an arithmetic number, because the mean of its divisors is an integer number (183024).

2⁸¹³⁴³⁰ is an apocalyptic number.

813430 is a deficient number, since it is larger than the sum of its proper divisors (650762).

813430 is a wasteful number, since it uses less digits than its factorization.

813430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81350.

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

The square root of 813430 is about 901.9035425144. The cubic root of 813430 is about 93.3483677595.

Adding to 813430 its reverse (34318), we get a palindrome (847748).

The spelling of 813430 in words is "eight hundred thirteen thousand, four hundred thirty".