2172030816 has 96 divisors (see below), whose sum is σ = 5762988000. Its totient is φ = 716267520.

The previous prime is 2172030767. The next prime is 2172030821. The reversal of 2172030816 is 6180302712.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6223410 + ... + 6223758.

It is an arithmetic number, because the mean of its divisors is an integer number (60031125).

Almost surely, 2^2172030816 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 2172030816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2881494000).

2172030816 is an abundant number, since it is smaller than the sum of its proper divisors (3590957184).

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

2172030816 is a wasteful number, since it uses less digits than its factorization.

2172030816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2172030816 is about 46605.0514000360. The cubic root of 2172030816 is about 1295.0563356082.

The spelling of 2172030816 in words is "two billion, one hundred seventy-two million, thirty thousand, eight hundred sixteen".