845515212 has 24 divisors (see below), whose sum is σ = 1973513136. Its totient is φ = 281746368.

The previous prime is 845515169. The next prime is 845515241. The reversal of 845515212 is 212515548.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33958 + ... + 53330.

It is an arithmetic number, because the mean of its divisors is an integer number (82229714).

Almost surely, 2^845515212 is an apocalyptic number.

It is an amenable number.

845515212 is an abundant number, since it is smaller than the sum of its proper divisors (1127997924).

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

845515212 is a wasteful number, since it uses less digits than its factorization.

845515212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23017 (or 23015 counting only the distinct ones).

The product of its digits is 16000, while the sum is 33.

The square root of 845515212 is about 29077.7442728971. The cubic root of 845515212 is about 945.5992995964.

The spelling of 845515212 in words is "eight hundred forty-five million, five hundred fifteen thousand, two hundred twelve".