2163144 has 32 divisors (see below), whose sum is σ = 5447520. Its totient is φ = 715776.

The previous prime is 2163137. The next prime is 2163163. The reversal of 2163144 is 4413612.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2163144.

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, 4399 + ... + 4865.

It is an arithmetic number, because the mean of its divisors is an integer number (170235).

2^2163144 is an apocalyptic number.

2163144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2163144 is an abundant number, since it is smaller than the sum of its proper divisors (3284376).

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

2163144 is a wasteful number, since it uses less digits than its factorization.

2163144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 665 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 2163144 is about 1470.7630672545. The cubic root of 2163144 is about 129.3287689843.

Adding to 2163144 its reverse (4413612), we get a palindrome (6576756).

The spelling of 2163144 in words is "two million, one hundred sixty-three thousand, one hundred forty-four".