860028581 has 4 divisors (see below), whose sum is σ = 897421152. Its totient is φ = 822636012.

The previous prime is 860028577. The next prime is 860028583. The reversal of 860028581 is 185820068.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 860028581 - 2² = 860028577 is a prime.

It is a super-2 number, since 2×860028581² = 1479298320273747122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860028583) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 18696251 + ... + 18696296.

It is an arithmetic number, because the mean of its divisors is an integer number (224355288).

Almost surely, 2^860028581 is an apocalyptic number.

It is an amenable number.

860028581 is a deficient number, since it is larger than the sum of its proper divisors (37392571).

860028581 is a wasteful number, since it uses less digits than its factorization.

860028581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37392570.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 860028581 is about 29326.2438951871. The cubic root of 860028581 is about 950.9790759302.

The spelling of 860028581 in words is "eight hundred sixty million, twenty-eight thousand, five hundred eighty-one".