812764452 has 24 divisors (see below), whose sum is σ = 1898219232. Its totient is φ = 270668800.

The previous prime is 812764429. The next prime is 812764481. The reversal of 812764452 is 254467218.

It is a self number, because there is not a number n which added to its sum of digits gives 812764452.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17949 + ... + 44132.

It is an arithmetic number, because the mean of its divisors is an integer number (79092468).

Almost surely, 2^812764452 is an apocalyptic number.

It is an amenable number.

812764452 is an abundant number, since it is smaller than the sum of its proper divisors (1085454780).

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

812764452 is a wasteful number, since it uses less digits than its factorization.

812764452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63179 (or 63177 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 812764452 is about 28509.0240450283. The cubic root of 812764452 is about 933.2290161755.

The spelling of 812764452 in words is "eight hundred twelve million, seven hundred sixty-four thousand, four hundred fifty-two".