24489920 has 168 divisors, whose sum is σ = 74334624. Its totient is φ = 7483392.

The previous prime is 24489889. The next prime is 24489923. The reversal of 24489920 is 2998442.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24489923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 844466 + ... + 844494.

It is an arithmetic number, because the mean of its divisors is an integer number (442468).

Almost surely, 2^24489920 is an apocalyptic number.

24489920 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 24489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37167312).

24489920 is an abundant number, since it is smaller than the sum of its proper divisors (49844704).

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

24489920 is a wasteful number, since it uses less digits than its factorization.

24489920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 24489920 is about 4948.7291297868. The cubic root of 24489920 is about 290.3994495407.

The spelling of 24489920 in words is "twenty-four million, four hundred eighty-nine thousand, nine hundred twenty".