865272628 has 12 divisors (see below), whose sum is σ = 1651884192. Its totient is φ = 393305720.

The previous prime is 865272619. The next prime is 865272631. The reversal of 865272628 is 826272568.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9832600 + ... + 9832687.

It is an arithmetic number, because the mean of its divisors is an integer number (137657016).

Almost surely, 2^865272628 is an apocalyptic number.

It is an amenable number.

865272628 is a deficient number, since it is larger than the sum of its proper divisors (786611564).

865272628 is a wasteful number, since it uses less digits than its factorization.

865272628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19665302 (or 19665300 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 865272628 is about 29415.5167896129. The cubic root of 865272628 is about 952.9080339511.

The spelling of 865272628 in words is "eight hundred sixty-five million, two hundred seventy-two thousand, six hundred twenty-eight".