872045812 has 24 divisors (see below), whose sum is σ = 1752438240. Its totient is φ = 375521760.

The previous prime is 872045789. The next prime is 872045861. The reversal of 872045812 is 218540278.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520723 + ... + 522394.

It is an arithmetic number, because the mean of its divisors is an integer number (73018260).

Almost surely, 2^872045812 is an apocalyptic number.

It is an amenable number.

872045812 is an abundant number, since it is smaller than the sum of its proper divisors (880392428).

872045812 is a wasteful number, since it uses less digits than its factorization.

872045812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043151 (or 1043149 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 872045812 is about 29530.4218053180. The cubic root of 872045812 is about 955.3879665972.

The spelling of 872045812 in words is "eight hundred seventy-two million, forty-five thousand, eight hundred twelve".