2172908 has 6 divisors (see below), whose sum is σ = 3802596. Its totient is φ = 1086452.

The previous prime is 2172901. The next prime is 2172917. The reversal of 2172908 is 8092712.

It is a happy number.

2172908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2172901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271610 + ... + 271617.

It is an arithmetic number, because the mean of its divisors is an integer number (633766).

2^2172908 is an apocalyptic number.

It is an amenable number.

2172908 is a deficient number, since it is larger than the sum of its proper divisors (1629688).

2172908 is a wasteful number, since it uses less digits than its factorization.

2172908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543231 (or 543229 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2172908 is about 1474.0786953213. The cubic root of 2172908 is about 129.5230650171.

It can be divided in two parts, 217 and 2908, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2172908 in words is "two million, one hundred seventy-two thousand, nine hundred eight".