869728 has 12 divisors (see below), whose sum is σ = 1712340. Its totient is φ = 434848.

The previous prime is 869717. The next prime is 869747. The reversal of 869728 is 827968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13558 + ... + 13621.

It is an arithmetic number, because the mean of its divisors is an integer number (142695).

2⁸⁶⁹⁷²⁸ is an apocalyptic number.

It is an amenable number.

869728 is a deficient number, since it is larger than the sum of its proper divisors (842612).

869728 is a wasteful number, since it uses less digits than its factorization.

869728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27189 (or 27181 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 869728 is about 932.5920866059. The cubic root of 869728 is about 95.4540773151.

The spelling of 869728 in words is "eight hundred sixty-nine thousand, seven hundred twenty-eight".