9729620056 has 16 divisors (see below), whose sum is σ = 19646348400. Its totient is φ = 4490593824.

The previous prime is 9729620051. The next prime is 9729620059. The reversal of 9729620056 is 6500269279.

It is a junction number, because it is equal to n+sod(n) for n = 9729619988 and 9729620015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729620051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46776916 + ... + 46777123.

It is an arithmetic number, because the mean of its divisors is an integer number (1227896775).

Almost surely, 2^9729620056 is an apocalyptic number.

It is an amenable number.

9729620056 is an abundant number, since it is smaller than the sum of its proper divisors (9916728344).

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

9729620056 is a wasteful number, since it uses less digits than its factorization.

9729620056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93554058 (or 93554054 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 9729620056 is about 98638.8364489363. The cubic root of 9729620056 is about 2134.8398145957.

The spelling of 9729620056 in words is "nine billion, seven hundred twenty-nine million, six hundred twenty thousand, fifty-six".