993728 has 14 divisors (see below), whose sum is σ = 1972056. Its totient is φ = 496832.

The previous prime is 993703. The next prime is 993763. The reversal of 993728 is 827399.

It is a junction number, because it is equal to n+sod(n) for n = 993691 and 993700.

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, 7700 + ... + 7827.

2⁹⁹³⁷²⁸ is an apocalyptic number.

It is an amenable number.

993728 is a deficient number, since it is larger than the sum of its proper divisors (978328).

993728 is a wasteful number, since it uses less digits than its factorization.

993728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15539 (or 15529 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 993728 is about 996.8590672708. The cubic root of 993728 is about 99.7904947152.

The spelling of 993728 in words is "nine hundred ninety-three thousand, seven hundred twenty-eight".