2163172 has 24 divisors (see below), whose sum is σ = 4167072. Its totient is φ = 974400.

The previous prime is 2163167. The next prime is 2163181. The reversal of 2163172 is 2713612.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

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, 9168 + ... + 9400.

It is an arithmetic number, because the mean of its divisors is an integer number (173628).

2^2163172 is an apocalyptic number.

2163172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2163172 is a deficient number, since it is larger than the sum of its proper divisors (2003900).

2163172 is a wasteful number, since it uses less digits than its factorization.

2163172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 457 counting only the distinct ones).

The product of its digits is 504, while the sum is 22.

The square root of 2163172 is about 1470.7725860921. The cubic root of 2163172 is about 129.3293269977.

Adding to 2163172 its reverse (2713612), we get a palindrome (4876784).

The spelling of 2163172 in words is "two million, one hundred sixty-three thousand, one hundred seventy-two".