860328720 has 60 divisors (see below), whose sum is σ = 2889273036. Its totient is φ = 229420800.

The previous prime is 860328671. The next prime is 860328743. The reversal of 860328720 is 27823068.

It is a happy number.

860328720 is a `hidden beast` number, since 8 + 603 + 28 + 7 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 322274304 + 538054416 = 17952^2 + 23196^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 596731 + ... + 598170.

Almost surely, 2^860328720 is an apocalyptic number.

860328720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

860328720 is an abundant number, since it is smaller than the sum of its proper divisors (2028944316).

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

860328720 is a wasteful number, since it uses less digits than its factorization.

860328720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194920 (or 1194911 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 860328720 is about 29331.3606912465. The cubic root of 860328720 is about 951.0896895843.

The spelling of 860328720 in words is "eight hundred sixty million, three hundred twenty-eight thousand, seven hundred twenty".