812430 has 80 divisors (see below), whose sum is σ = 2352240. Its totient is φ = 200448.

The previous prime is 812401. The next prime is 812431. The reversal of 812430 is 34218.

It is a happy number.

812430 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 (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812431) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13741 + ... + 13799.

It is an arithmetic number, because the mean of its divisors is an integer number (29403).

2⁸¹²⁴³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176120).

812430 is an abundant number, since it is smaller than the sum of its proper divisors (1539810).

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

812430 is a wasteful number, since it uses less digits than its factorization.

812430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 812430 is about 901.3489890159. The cubic root of 812430 is about 93.3100990919.

Adding to 812430 its reverse (34218), we get a palindrome (846648).

The spelling of 812430 in words is "eight hundred twelve thousand, four hundred thirty".