812462320 has 20 divisors (see below), whose sum is σ = 1888975080. Its totient is φ = 324984896.

The previous prime is 812462311. The next prime is 812462323. The reversal of 812462320 is 23264218.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812462323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5077810 + ... + 5077969.

It is an arithmetic number, because the mean of its divisors is an integer number (94448754).

Almost surely, 2^812462320 is an apocalyptic number.

812462320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

812462320 is an abundant number, since it is smaller than the sum of its proper divisors (1076512760).

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

812462320 is a wasteful number, since it uses less digits than its factorization.

812462320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10155792 (or 10155786 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 812462320 is about 28503.7246688920. The cubic root of 812462320 is about 933.1133642613.

The spelling of 812462320 in words is "eight hundred twelve million, four hundred sixty-two thousand, three hundred twenty".