2173966320 has 160 divisors (see below), whose sum is σ = 7158470400. Its totient is φ = 544223232.

The previous prime is 2173966261. The next prime is 2173966321. The reversal of 2173966320 is 236693712.

It is a super-3 number, since 3×2173966320³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173966321) 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 31 ways as a sum of consecutive naturals, for example, 513171 + ... + 517389.

It is an arithmetic number, because the mean of its divisors is an integer number (44740440).

Almost surely, 2^2173966320 is an apocalyptic number.

2173966320 is a gapful number since it is divisible by the number (20) 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 2173966320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3579235200).

2173966320 is an abundant number, since it is smaller than the sum of its proper divisors (4984504080).

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

2173966320 is a wasteful number, since it uses less digits than its factorization.

2173966320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367 (or 4361 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 2173966320 is about 46625.8117355612. The cubic root of 2173966320 is about 1295.4408977616.

The spelling of 2173966320 in words is "two billion, one hundred seventy-three million, nine hundred sixty-six thousand, three hundred twenty".