9723828 has 12 divisors (see below), whose sum is σ = 22688960. Its totient is φ = 3241272.

The previous prime is 9723821. The next prime is 9723829. The reversal of 9723828 is 8283279.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9723821) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 405148 + ... + 405171.

Almost surely, 2^9723828 is an apocalyptic number.

It is an amenable number.

9723828 is an abundant number, since it is smaller than the sum of its proper divisors (12965132).

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

9723828 is a wasteful number, since it uses less digits than its factorization.

9723828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810326 (or 810324 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 9723828 is about 3118.3053089779. The cubic root of 9723828 is about 213.4416106162.

The spelling of 9723828 in words is "nine million, seven hundred twenty-three thousand, eight hundred twenty-eight".