851832220 has 24 divisors (see below), whose sum is σ = 1793988000. Its totient is φ = 339753792.

The previous prime is 851832211. The next prime is 851832239. The reversal of 851832220 is 22238158.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54040 + ... + 67999.

It is an arithmetic number, because the mean of its divisors is an integer number (74749500).

Almost surely, 2^851832220 is an apocalyptic number.

It is an amenable number.

851832220 is an abundant number, since it is smaller than the sum of its proper divisors (942155780).

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

851832220 is a wasteful number, since it uses less digits than its factorization.

851832220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122397 (or 122395 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 851832220 is about 29186.1648731038. The cubic root of 851832220 is about 947.9483776717.

The spelling of 851832220 in words is "eight hundred fifty-one million, eight hundred thirty-two thousand, two hundred twenty".