2143320 has 64 divisors (see below), whose sum is σ = 6570720. Its totient is φ = 559104.

The previous prime is 2143319. The next prime is 2143331. The reversal of 2143320 is 233412.

2143320 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2143320.

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, 6192 + ... + 6528.

2^2143320 is an apocalyptic number.

2143320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3285360).

2143320 is an abundant number, since it is smaller than the sum of its proper divisors (4427400).

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

2143320 is a wasteful number, since it uses less digits than its factorization.

2143320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2143320 is about 1464.0081966984. The cubic root of 2143320 is about 128.9324807410.

Adding to 2143320 its reverse (233412), we get a palindrome (2376732).

The spelling of 2143320 in words is "two million, one hundred forty-three thousand, three hundred twenty".