9920844270 has 24 divisors (see below), whose sum is σ = 25794195336. Its totient is φ = 2645558448.

The previous prime is 9920844257. The next prime is 9920844337. The reversal of 9920844270 is 724480299.

9920844270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55115712 + ... + 55115891.

It is an arithmetic number, because the mean of its divisors is an integer number (1074758139).

Almost surely, 2^9920844270 is an apocalyptic number.

9920844270 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

9920844270 is an abundant number, since it is smaller than the sum of its proper divisors (15873351066).

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

9920844270 is a wasteful number, since it uses less digits than its factorization.

9920844270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110231616 (or 110231613 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 9920844270 is about 99603.4350311273. The cubic root of 9920844270 is about 2148.7350966035.

The spelling of 9920844270 in words is "nine billion, nine hundred twenty million, eight hundred forty-four thousand, two hundred seventy".