868533220 has 24 divisors (see below), whose sum is σ = 1827895608. Its totient is φ = 346656000.

The previous prime is 868533203. The next prime is 868533233. The reversal of 868533220 is 22335868.

868533220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 148254976 + 720278244 = 12176^2 + 26838^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 868533220.

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, 37881 + ... + 56320.

It is an arithmetic number, because the mean of its divisors is an integer number (76162317).

Almost surely, 2^868533220 is an apocalyptic number.

It is an amenable number.

868533220 is an abundant number, since it is smaller than the sum of its proper divisors (959362388).

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

868533220 is a wasteful number, since it uses less digits than its factorization.

868533220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94671 (or 94669 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 868533220 is about 29470.8876690201. The cubic root of 868533220 is about 954.1034759506.

It can be divided in two parts, 8685 and 33220, that added together give a triangular number (41905 = T₂₈₉).

The spelling of 868533220 in words is "eight hundred sixty-eight million, five hundred thirty-three thousand, two hundred twenty".