9806507172 has 72 divisors (see below), whose sum is σ = 30905364672. Its totient is φ = 2547144000.

The previous prime is 9806507159. The next prime is 9806507213. The reversal of 9806507172 is 2717056089.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 23 ways as a sum of consecutive naturals, for example, 1766079 + ... + 1771622.

It is an arithmetic number, because the mean of its divisors is an integer number (429241176).

Almost surely, 2^9806507172 is an apocalyptic number.

It is an amenable number.

9806507172 is an abundant number, since it is smaller than the sum of its proper divisors (21098857500).

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

9806507172 is a wasteful number, since it uses less digits than its factorization.

9806507172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537729 (or 3537724 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 9806507172 is about 99027.8100939327. The cubic root of 9806507172 is about 2140.4485020890.

The spelling of 9806507172 in words is "nine billion, eight hundred six million, five hundred seven thousand, one hundred seventy-two".