812767488 has 144 divisors (see below), whose sum is σ = 2351548416. Its totient is φ = 247726080.

The previous prime is 812767481. The next prime is 812767489. The reversal of 812767488 is 884767218.

It is a self number, because there is not a number n which added to its sum of digits gives 812767488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812767481) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1267648 + ... + 1268288.

Almost surely, 2^812767488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812767488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1175774208).

812767488 is an abundant number, since it is smaller than the sum of its proper divisors (1538780928).

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

812767488 is a wasteful number, since it uses less digits than its factorization.

812767488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 786 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 51.

The square root of 812767488 is about 28509.0772912769. The cubic root of 812767488 is about 933.2301781685.

The spelling of 812767488 in words is "eight hundred twelve million, seven hundred sixty-seven thousand, four hundred eighty-eight".