24045640 has 64 divisors (see below), whose sum is σ = 58968000. Its totient is φ = 8789760.

The previous prime is 24045629. The next prime is 24045647. The reversal of 24045640 is 4654042.

It is not an unprimeable number, because it can be changed into a prime (24045647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21495 + ... + 22585.

It is an arithmetic number, because the mean of its divisors is an integer number (921375).

Almost surely, 2^24045640 is an apocalyptic number.

24045640 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 24045640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29484000).

24045640 is an abundant number, since it is smaller than the sum of its proper divisors (34922360).

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

24045640 is a wasteful number, since it uses less digits than its factorization.

24045640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 24045640 is about 4903.6353861192. The cubic root of 24045640 is about 288.6326434758.

Adding to 24045640 its reverse (4654042), we get a palindrome (28699682).

The spelling of 24045640 in words is "twenty-four million, forty-five thousand, six hundred forty".