9128671920 has 160 divisors (see below), whose sum is σ = 31576550400. Its totient is φ = 2423990016.

The previous prime is 9128671913. The next prime is 9128671933. The reversal of 9128671920 is 291768219.

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

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 31 ways as a sum of consecutive naturals, for example, 507399 + ... + 525081.

It is an arithmetic number, because the mean of its divisors is an integer number (197353440).

Almost surely, 2^9128671920 is an apocalyptic number.

9128671920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9128671920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15788275200).

9128671920 is an abundant number, since it is smaller than the sum of its proper divisors (22447878480).

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

9128671920 is a wasteful number, since it uses less digits than its factorization.

9128671920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17944 (or 17932 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 9128671920 is about 95544.0836472882. The cubic root of 9128671920 is about 2089.9498564773.

The spelling of 9128671920 in words is "nine billion, one hundred twenty-eight million, six hundred seventy-one thousand, nine hundred twenty".