2143530 has 64 divisors (see below), whose sum is σ = 6065280. Its totient is φ = 536832.

The previous prime is 2143517. The next prime is 2143541. The reversal of 2143530 is 353412.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 2¹⁷ + 1 + 4⁴ + 3³ + 5⁹ + 3¹⁰ + 0 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4357 + ... + 4823.

It is an arithmetic number, because the mean of its divisors is an integer number (94770).

2^2143530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3032640).

2143530 is an abundant number, since it is smaller than the sum of its proper divisors (3921750).

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

2143530 is a wasteful number, since it uses less digits than its factorization.

2143530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2143530 is about 1464.0799158516. The cubic root of 2143530 is about 128.9366914883.

Adding to 2143530 its reverse (353412), we get a palindrome (2496942).

The spelling of 2143530 in words is "two million, one hundred forty-three thousand, five hundred thirty".