2172712338 has 24 divisors (see below), whose sum is σ = 4739143500. Its totient is φ = 719375904.

The previous prime is 2172712337. The next prime is 2172712343. The reversal of 2172712338 is 8332172712.

It can be written as a sum of positive squares in 2 ways, for example, as 1966301649 + 206410689 = 44343^2 + 14367^2 .

It is not an unprimeable number, because it can be changed into a prime (2172712337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402373 + ... + 407736.

Almost surely, 2^2172712338 is an apocalyptic number.

2172712338 is an abundant number, since it is smaller than the sum of its proper divisors (2566431162).

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

2172712338 is a wasteful number, since it uses less digits than its factorization.

2172712338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810266 (or 810263 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 2172712338 is about 46612.3625018085. The cubic root of 2172712338 is about 1295.1917721592.

The spelling of 2172712338 in words is "two billion, one hundred seventy-two million, seven hundred twelve thousand, three hundred thirty-eight".