2172104 has 16 divisors (see below), whose sum is σ = 4443120. Its totient is φ = 987280.

The previous prime is 2172091. The next prime is 2172109. The reversal of 2172104 is 4012712.

It is not an unprimeable number, because it can be changed into a prime (2172109) 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 3 ways as a sum of consecutive naturals, for example, 12254 + ... + 12429.

It is an arithmetic number, because the mean of its divisors is an integer number (277695).

2^2172104 is an apocalyptic number.

It is an amenable number.

2172104 is an abundant number, since it is smaller than the sum of its proper divisors (2271016).

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

2172104 is a wasteful number, since it uses less digits than its factorization.

2172104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24700 (or 24696 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 2172104 is about 1473.8059573770. The cubic root of 2172104 is about 129.5070880573.

Adding to 2172104 its reverse (4012712), we get a palindrome (6184816).

The spelling of 2172104 in words is "two million, one hundred seventy-two thousand, one hundred four".