2172885716 has 24 divisors (see below), whose sum is σ = 3971353344. Its totient is φ = 1038296160.

The previous prime is 2172885713. The next prime is 2172885721. The reversal of 2172885716 is 6175882712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172885713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101861 + ... + 121331.

It is an arithmetic number, because the mean of its divisors is an integer number (165473056).

Almost surely, 2^2172885716 is an apocalyptic number.

It is an amenable number.

2172885716 is a deficient number, since it is larger than the sum of its proper divisors (1798467628).

2172885716 is a wasteful number, since it uses less digits than its factorization.

2172885716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20711 (or 20709 counting only the distinct ones).

The product of its digits is 376320, while the sum is 47.

The square root of 2172885716 is about 46614.2222502961. Note that the first 4 decimals coincide. The cubic root of 2172885716 is about 1295.2262224609.

The spelling of 2172885716 in words is "two billion, one hundred seventy-two million, eight hundred eighty-five thousand, seven hundred sixteen".