869928 has 32 divisors (see below), whose sum is σ = 2211360. Its totient is φ = 285120.

The previous prime is 869927. The next prime is 869951. The reversal of 869928 is 829968.

It is a self number, because there is not a number n which added to its sum of digits gives 869928.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869928.

It is not an unprimeable number, because it can be changed into a prime (869927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (69105).

2⁸⁶⁹⁹²⁸ is an apocalyptic number.

It is an amenable number.

869928 is an abundant number, since it is smaller than the sum of its proper divisors (1341432).

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

869928 is a wasteful number, since it uses less digits than its factorization.

869928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 613 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 869928 is about 932.6993084591. The cubic root of 869928 is about 95.4613935305.

The spelling of 869928 in words is "eight hundred sixty-nine thousand, nine hundred twenty-eight".