2172870912 has 144 divisors (see below), whose sum is σ = 6255228672. Its totient is φ = 666992640.

The previous prime is 2172870911. The next prime is 2172870919. The reversal of 2172870912 is 2190782712.

It is not an unprimeable number, because it can be changed into a prime (2172870911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611862 + ... + 615402.

It is an arithmetic number, because the mean of its divisors is an integer number (43439088).

Almost surely, 2^2172870912 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 2172870912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3127614336).

2172870912 is an abundant number, since it is smaller than the sum of its proper divisors (4082357760).

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

2172870912 is a wasteful number, since it uses less digits than its factorization.

2172870912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624 (or 3610 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 2172870912 is about 46614.0634572872. The cubic root of 2172870912 is about 1295.2232809697.

The spelling of 2172870912 in words is "two billion, one hundred seventy-two million, eight hundred seventy thousand, nine hundred twelve".