812570076 has 48 divisors (see below), whose sum is σ = 2116172800. Its totient is φ = 269634096.

The previous prime is 812570051. The next prime is 812570107. The reversal of 812570076 is 670075218.

812570076 is a `hidden beast` number, since 8 + 12 + 570 + 0 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 812570076.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7215 + ... + 40953.

Almost surely, 2^812570076 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 812570076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058086400).

812570076 is an abundant number, since it is smaller than the sum of its proper divisors (1303602724).

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

812570076 is a wasteful number, since it uses less digits than its factorization.

812570076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33975 (or 33967 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 812570076 is about 28505.6148153307. The cubic root of 812570076 is about 933.1546150436.

The spelling of 812570076 in words is "eight hundred twelve million, five hundred seventy thousand, seventy-six".