864287628 has 24 divisors (see below), whose sum is σ = 2017664880. Its totient is φ = 287953920.

The previous prime is 864287623. The next prime is 864287651. The reversal of 864287628 is 826782468.

It is not an unprimeable number, because it can be changed into a prime (864287623) 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 7 ways as a sum of consecutive naturals, for example, 9268 + ... + 42596.

It is an arithmetic number, because the mean of its divisors is an integer number (84069370).

Almost surely, 2^864287628 is an apocalyptic number.

It is an amenable number.

864287628 is an abundant number, since it is smaller than the sum of its proper divisors (1153377252).

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

864287628 is a wasteful number, since it uses less digits than its factorization.

864287628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35497 (or 35495 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 51.

The square root of 864287628 is about 29398.7691579086. The cubic root of 864287628 is about 952.5463094988.

The spelling of 864287628 in words is "eight hundred sixty-four million, two hundred eighty-seven thousand, six hundred twenty-eight".