2143744 has 40 divisors (see below), whose sum is σ = 4419360. Its totient is φ = 1038336.

The previous prime is 2143741. The next prime is 2143753. The reversal of 2143744 is 4473412.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27097 + ... + 27175.

It is an arithmetic number, because the mean of its divisors is an integer number (110484).

2^2143744 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 2143744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2209680).

2143744 is an abundant number, since it is smaller than the sum of its proper divisors (2275616).

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

2143744 is an frugal number, since it uses more digits than its factorization.

2143744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 134 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 2143744 is about 1464.1529974699. The cubic root of 2143744 is about 128.9409821574.

The spelling of 2143744 in words is "two million, one hundred forty-three thousand, seven hundred forty-four".