860528720 has 40 divisors (see below), whose sum is σ = 2002435080. Its totient is φ = 343918080.

The previous prime is 860528701. The next prime is 860528741. The reversal of 860528720 is 27825068.

It can be written as a sum of positive squares in 4 ways, for example, as 98327056 + 762201664 = 9916^2 + 27608^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106586 + ... + 114374.

It is an arithmetic number, because the mean of its divisors is an integer number (50060877).

Almost surely, 2^860528720 is an apocalyptic number.

860528720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

860528720 is an abundant number, since it is smaller than the sum of its proper divisors (1141906360).

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

860528720 is a wasteful number, since it uses less digits than its factorization.

860528720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9183 (or 9177 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 860528720 is about 29334.7698133120. The cubic root of 860528720 is about 951.1633835865.

The spelling of 860528720 in words is "eight hundred sixty million, five hundred twenty-eight thousand, seven hundred twenty".