24489940 has 24 divisors (see below), whose sum is σ = 53665920. Its totient is φ = 9369888.

The previous prime is 24489929. The next prime is 24489943. The reversal of 24489940 is 4998442.

It is a super-2 number, since 2×24489940² = 1199514322407200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 24489893 and 24489902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24489943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26160 + ... + 27079.

It is an arithmetic number, because the mean of its divisors is an integer number (2236080).

Almost surely, 2^24489940 is an apocalyptic number.

24489940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24489940 is an abundant number, since it is smaller than the sum of its proper divisors (29175980).

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

24489940 is a wasteful number, since it uses less digits than its factorization.

24489940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53271 (or 53269 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 24489940 is about 4948.7311505072. The cubic root of 24489940 is about 290.3995285935.

The spelling of 24489940 in words is "twenty-four million, four hundred eighty-nine thousand, nine hundred forty".