9806312920 has 16 divisors (see below), whose sum is σ = 22064204160. Its totient is φ = 3922525152.

The previous prime is 9806312891. The next prime is 9806312921. The reversal of 9806312920 is 292136089.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 245157823 = 9806312920 / (9 + 8 + 0 + 6 + 3 + 1 + 2 + 9 + 2 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9806312921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 122578872 + ... + 122578951.

It is an arithmetic number, because the mean of its divisors is an integer number (1379012760).

Almost surely, 2^9806312920 is an apocalyptic number.

It is an amenable number.

9806312920 is an abundant number, since it is smaller than the sum of its proper divisors (12257891240).

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

9806312920 is a wasteful number, since it uses less digits than its factorization.

9806312920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245157834 (or 245157830 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 9806312920 is about 99026.8292938838. The cubic root of 9806312920 is about 2140.4343689853.

The spelling of 9806312920 in words is "nine billion, eight hundred six million, three hundred twelve thousand, nine hundred twenty".