2168144 has 40 divisors (see below), whose sum is σ = 4666368. Its totient is φ = 967680.

The previous prime is 2168143. The next prime is 2168149. The reversal of 2168144 is 4418612.

2168144 = T₃₅₂ + T₃₅₃ + ... + T₃₈₃.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168143) 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, 17009 + ... + 17135.

2^2168144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2333184).

2168144 is an abundant number, since it is smaller than the sum of its proper divisors (2498224).

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

2168144 is a wasteful number, since it uses less digits than its factorization.

2168144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 237 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 2168144 is about 1472.4618840568. The cubic root of 2168144 is about 129.4283379844.

The spelling of 2168144 in words is "two million, one hundred sixty-eight thousand, one hundred forty-four".