2443140 has 108 divisors (see below), whose sum is σ = 8651916. Its totient is φ = 556416.

The previous prime is 2443117. The next prime is 2443151. The reversal of 2443140 is 413442.

It can be written as a sum of positive squares in 2 ways, for example, as 636804 + 1806336 = 798^2 + 1344^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8682 + ... + 8958.

2^2443140 is an apocalyptic number.

2443140 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 2443140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4325958).

2443140 is an abundant number, since it is smaller than the sum of its proper divisors (6208776).

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

2443140 is a wasteful number, since it uses less digits than its factorization.

2443140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2443140 is about 1563.0547015380. The cubic root of 2443140 is about 134.6840347280.

Adding to 2443140 its reverse (413442), we get a palindrome (2856582).

The spelling of 2443140 in words is "two million, four hundred forty-three thousand, one hundred forty".