2143284 has 48 divisors (see below), whose sum is σ = 5880000. Its totient is φ = 599040.

The previous prime is 2143279. The next prime is 2143313. The reversal of 2143284 is 4823412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1092 + ... + 2340.

It is an arithmetic number, because the mean of its divisors is an integer number (122500).

2^2143284 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 2143284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2940000).

2143284 is an abundant number, since it is smaller than the sum of its proper divisors (3736716).

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

2143284 is a wasteful number, since it uses less digits than its factorization.

2143284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280 (or 1278 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 2143284 is about 1463.9959016336. The cubic root of 2143284 is about 128.9317588710.

Adding to 2143284 its reverse (4823412), we get a palindrome (6966696).

The spelling of 2143284 in words is "two million, one hundred forty-three thousand, two hundred eighty-four".