9925728 has 24 divisors (see below), whose sum is σ = 26055288. Its totient is φ = 3308544.

The previous prime is 9925717. The next prime is 9925757. The reversal of 9925728 is 8275299.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 9925728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51601 + ... + 51792.

It is an arithmetic number, because the mean of its divisors is an integer number (1085637).

Almost surely, 2^9925728 is an apocalyptic number.

It is an amenable number.

9925728 is an abundant number, since it is smaller than the sum of its proper divisors (16129560).

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

9925728 is a wasteful number, since it uses less digits than its factorization.

9925728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103406 (or 103398 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 9925728 is about 3150.5123392871. The cubic root of 9925728 is about 214.9087624416.

The spelling of 9925728 in words is "nine million, nine hundred twenty-five thousand, seven hundred twenty-eight".