851217204 has 12 divisors (see below), whose sum is σ = 1986173504. Its totient is φ = 283739064.

The previous prime is 851217187. The next prime is 851217223. The reversal of 851217204 is 402712158.

851217204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35467372 + ... + 35467395.

Almost surely, 2^851217204 is an apocalyptic number.

It is an amenable number.

851217204 is an abundant number, since it is smaller than the sum of its proper divisors (1134956300).

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

851217204 is a wasteful number, since it uses less digits than its factorization.

851217204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70934774 (or 70934772 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 851217204 is about 29175.6268827252. The cubic root of 851217204 is about 947.7201857148.

The spelling of 851217204 in words is "eight hundred fifty-one million, two hundred seventeen thousand, two hundred four".