9717472020 has 48 divisors (see below), whose sum is σ = 27654979968. Its totient is φ = 2548844160.

The previous prime is 9717471991. The next prime is 9717472021. The reversal of 9717472020 is 202747179.

It is a self number, because there is not a number n which added to its sum of digits gives 9717472020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9717472021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1323864 + ... + 1331183.

It is an arithmetic number, because the mean of its divisors is an integer number (576145416).

Almost surely, 2^9717472020 is an apocalyptic number.

It is an amenable number.

9717472020 is an abundant number, since it is smaller than the sum of its proper divisors (17937507948).

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

9717472020 is a wasteful number, since it uses less digits than its factorization.

9717472020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655120 (or 2655118 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 9717472020 is about 98577.2388536015. The cubic root of 9717472020 is about 2133.9509511143.

The spelling of 9717472020 in words is "nine billion, seven hundred seventeen million, four hundred seventy-two thousand, twenty".