812700084 has 120 divisors (see below), whose sum is σ = 2250569888. Its totient is φ = 228191040.

The previous prime is 812700041. The next prime is 812700107. The reversal of 812700084 is 480007218.

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 1930194 + ... + 1930614.

Almost surely, 2^812700084 is an apocalyptic number.

812700084 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812700084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1125284944).

812700084 is an abundant number, since it is smaller than the sum of its proper divisors (1437869804).

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

812700084 is a wasteful number, since it uses less digits than its factorization.

812700084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 812700084 is about 28507.8951169672. The cubic root of 812700084 is about 933.2043794061.

The spelling of 812700084 in words is "eight hundred twelve million, seven hundred thousand, eighty-four".