2172044 has 12 divisors (see below), whose sum is σ = 4344144. Its totient is φ = 930864.

The previous prime is 2172041. The next prime is 2172047. The reversal of 2172044 is 4402712.

It is an interprime number because it is at equal distance from previous prime (2172041) and next prime (2172047).

2172044 is an admirable number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2172041) 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, 38759 + ... + 38814.

It is an arithmetic number, because the mean of its divisors is an integer number (362012).

2^2172044 is an apocalyptic number.

It is an amenable number.

2172044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2172044 is a wasteful number, since it uses less digits than its factorization.

2172044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77584 (or 77582 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 2172044 is about 1473.7856017752. The cubic root of 2172044 is about 129.5058955888.

Adding to 2172044 its reverse (4402712), we get a palindrome (6574756).

The spelling of 2172044 in words is "two million, one hundred seventy-two thousand, forty-four".