2172205904 has 40 divisors (see below), whose sum is σ = 4594006560. Its totient is φ = 986774400.

The previous prime is 2172205897. The next prime is 2172205921. The reversal of 2172205904 is 4095022712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444434 + ... + 449294.

It is an arithmetic number, because the mean of its divisors is an integer number (114850164).

Almost surely, 2^2172205904 is an apocalyptic number.

It is an amenable number.

2172205904 is an abundant number, since it is smaller than the sum of its proper divisors (2421800656).

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

2172205904 is a wasteful number, since it uses less digits than its factorization.

2172205904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7419 (or 7413 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2172205904 is about 46606.9297851725. The cubic root of 2172205904 is about 1295.0911329554.

The spelling of 2172205904 in words is "two billion, one hundred seventy-two million, two hundred five thousand, nine hundred four".