2172791960 has 32 divisors (see below), whose sum is σ = 4893361200. Its totient is φ = 868302720.

The previous prime is 2172791921. The next prime is 2172791963. The reversal of 2172791960 is 691972712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172791963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18746 + ... + 68534.

Almost surely, 2^2172791960 is an apocalyptic number.

2172791960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172791960 is an abundant number, since it is smaller than the sum of its proper divisors (2720569240).

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

2172791960 is a wasteful number, since it uses less digits than its factorization.

2172791960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50891 (or 50887 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 2172791960 is about 46613.2165807081. The cubic root of 2172791960 is about 1295.2075933209.

The spelling of 2172791960 in words is "two billion, one hundred seventy-two million, seven hundred ninety-one thousand, nine hundred sixty".