2108172 has 24 divisors (see below), whose sum is σ = 5366592. Its totient is φ = 638800.

The previous prime is 2108159. The next prime is 2108177. The reversal of 2108172 is 2718012.

It is not an unprimeable number, because it can be changed into a prime (2108177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7854 + ... + 8117.

It is an arithmetic number, because the mean of its divisors is an integer number (223608).

2^2108172 is an apocalyptic number.

2108172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2108172 is an abundant number, since it is smaller than the sum of its proper divisors (3258420).

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

2108172 is a wasteful number, since it uses less digits than its factorization.

2108172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15989 (or 15987 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 2108172 is about 1451.9545447431. The cubic root of 2108172 is about 128.2238109074.

The spelling of 2108172 in words is "two million, one hundred eight thousand, one hundred seventy-two".