9725313228 has 24 divisors (see below), whose sum is σ = 23120557488. Its totient is φ = 3180605376.

The previous prime is 9725313209. The next prime is 9725313313. The reversal of 9725313228 is 8223135279.

It is a self number, because there is not a number n which added to its sum of digits gives 9725313228.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7645051 + ... + 7646322.

It is an arithmetic number, because the mean of its divisors is an integer number (963356562).

Almost surely, 2^9725313228 is an apocalyptic number.

It is an amenable number.

9725313228 is an abundant number, since it is smaller than the sum of its proper divisors (13395244260).

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

9725313228 is a wasteful number, since it uses less digits than its factorization.

9725313228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15291433 (or 15291431 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 9725313228 is about 98617.0027327945. The cubic root of 9725313228 is about 2134.5247716373.

The spelling of 9725313228 in words is "nine billion, seven hundred twenty-five million, three hundred thirteen thousand, two hundred twenty-eight".