2173742880 has 384 divisors, whose sum is σ = 7727892480. Its totient is φ = 510935040.

The previous prime is 2173742843. The next prime is 2173742881. The reversal of 2173742880 is 882473712.

It is not an unprimeable number, because it can be changed into a prime (2173742881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9019560 + ... + 9019800.

It is an arithmetic number, because the mean of its divisors is an integer number (20124720).

Almost surely, 2^2173742880 is an apocalyptic number.

2173742880 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 2173742880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3863946240).

2173742880 is an abundant number, since it is smaller than the sum of its proper divisors (5554149600).

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

2173742880 is a wasteful number, since it uses less digits than its factorization.

2173742880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 2173742880 is about 46623.4155762960. The cubic root of 2173742880 is about 1295.3965144871.

The spelling of 2173742880 in words is "two billion, one hundred seventy-three million, seven hundred forty-two thousand, eight hundred eighty".