87822812 has 24 divisors (see below), whose sum is σ = 191614080. Its totient is φ = 34216560.

The previous prime is 87822803. The next prime is 87822877. The reversal of 87822812 is 21822878.

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 7 ways as a sum of consecutive naturals, for example, 142262 + ... + 142877.

It is an arithmetic number, because the mean of its divisors is an integer number (7983920).

Almost surely, 2^87822812 is an apocalyptic number.

It is an amenable number.

87822812 is an abundant number, since it is smaller than the sum of its proper divisors (103791268).

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

87822812 is a wasteful number, since it uses less digits than its factorization.

87822812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285161 (or 285159 counting only the distinct ones).

The product of its digits is 28672, while the sum is 38.

The square root of 87822812 is about 9371.3826087723. The cubic root of 87822812 is about 444.4972852637.

The spelling of 87822812 in words is "eighty-seven million, eight hundred twenty-two thousand, eight hundred twelve".