845500872 has 32 divisors (see below), whose sum is σ = 2145304800. Its totient is φ = 277626624.

The previous prime is 845500871. The next prime is 845500919. The reversal of 845500872 is 278005548.

It is a self number, because there is not a number n which added to its sum of digits gives 845500872.

It is not an unprimeable number, because it can be changed into a prime (845500871) by changing a digit.

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, 261297 + ... + 264512.

It is an arithmetic number, because the mean of its divisors is an integer number (67040775).

Almost surely, 2^845500872 is an apocalyptic number.

It is an amenable number.

845500872 is an abundant number, since it is smaller than the sum of its proper divisors (1299803928).

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

845500872 is a wasteful number, since it uses less digits than its factorization.

845500872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525885 (or 525881 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 845500872 is about 29077.4976915140. The cubic root of 845500872 is about 945.5939537550.

The spelling of 845500872 in words is "eight hundred forty-five million, five hundred thousand, eight hundred seventy-two".