9308228728 has 32 divisors (see below), whose sum is σ = 17546578560. Its totient is φ = 4629179520.

The previous prime is 9308228719. The next prime is 9308228767. The reversal of 9308228728 is 8278228039.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3818326 + ... + 3820762.

It is an arithmetic number, because the mean of its divisors is an integer number (548330580).

Almost surely, 2^9308228728 is an apocalyptic number.

It is an amenable number.

9308228728 is a deficient number, since it is larger than the sum of its proper divisors (8238349832).

9308228728 is a wasteful number, since it uses less digits than its factorization.

9308228728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807 (or 4803 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 9308228728 is about 96479.1621439573. The cubic root of 9308228728 is about 2103.5637694547.

The spelling of 9308228728 in words is "nine billion, three hundred eight million, two hundred twenty-eight thousand, seven hundred twenty-eight".