2002144 has 48 divisors (see below), whose sum is σ = 4309200. Its totient is φ = 912384.

The previous prime is 2002093. The next prime is 2002151. The reversal of 2002144 is 4412002.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22452 + ... + 22540.

It is an arithmetic number, because the mean of its divisors is an integer number (89775).

2^2002144 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 2002144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2154600).

2002144 is an abundant number, since it is smaller than the sum of its proper divisors (2307056).

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

2002144 is a wasteful number, since it uses less digits than its factorization.

2002144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2002144 is about 1414.9713778024. The cubic root of 2002144 is about 126.0371100903.

Adding to 2002144 its reverse (4412002), we get a palindrome (6414146).

The spelling of 2002144 in words is "two million, two thousand, one hundred forty-four".