2172120576 has 80 divisors (see below), whose sum is σ = 5921418624. Its totient is φ = 707180544.

The previous prime is 2172120479. The next prime is 2172120581. The reversal of 2172120576 is 6750212712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49605 + ... + 82491.

Almost surely, 2^2172120576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2172120576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2960709312).

2172120576 is an abundant number, since it is smaller than the sum of its proper divisors (3749298048).

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

2172120576 is an equidigital number, since it uses as much as digits as its factorization.

2172120576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32951 (or 32935 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 2172120576 is about 46606.0143758292. The cubic root of 2172120576 is about 1295.0741749278.

The spelling of 2172120576 in words is "two billion, one hundred seventy-two million, one hundred twenty thousand, five hundred seventy-six".