865223528 has 32 divisors (see below), whose sum is σ = 1773176160. Its totient is φ = 393370560.

The previous prime is 865223479. The next prime is 865223599. The reversal of 865223528 is 825322568.

It is a super-2 number, since 2×865223528² = 1497223506809533568, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 55118 + ... + 69053.

It is an arithmetic number, because the mean of its divisors is an integer number (55411755).

Almost surely, 2^865223528 is an apocalyptic number.

It is an amenable number.

865223528 is an abundant number, since it is smaller than the sum of its proper divisors (907952632).

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

865223528 is a wasteful number, since it uses less digits than its factorization.

865223528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124257 (or 124253 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The square root of 865223528 is about 29414.6821842426. The cubic root of 865223528 is about 952.8900093162.

The spelling of 865223528 in words is "eight hundred sixty-five million, two hundred twenty-three thousand, five hundred twenty-eight".