24040 has 16 divisors (see below), whose sum is σ = 54180. Its totient is φ = 9600.

The previous prime is 24029. The next prime is 24043. The reversal of 24040 is 4042.

24040 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 23716 + 324 = 154^2 + 18^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24043) 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, 261 + ... + 340.

2²⁴⁰⁴⁰ is an apocalyptic number.

24040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24040 is an abundant number, since it is smaller than the sum of its proper divisors (30140).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27090).

24040 is a wasteful number, since it uses less digits than its factorization.

24040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 24040 is about 155.0483795465. The cubic root of 24040 is about 28.8610075068.

Adding to 24040 its reverse (4042), we get a palindrome (28082).

The spelling of 24040 in words is "twenty-four thousand, forty", and thus it is an iban number.