24243981 has 8 divisors (see below), whose sum is σ = 34026720. Its totient is φ = 15311952.

The previous prime is 24243979. The next prime is 24244007. The reversal of 24243981 is 18934242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 24243981 - 2¹ = 24243979 is a prime.

It is a super-2 number, since 2×24243981² = 1175541229456722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24243911) 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, 212610 + ... + 212723.

It is an arithmetic number, because the mean of its divisors is an integer number (4253340).

Almost surely, 2^24243981 is an apocalyptic number.

It is an amenable number.

24243981 is a deficient number, since it is larger than the sum of its proper divisors (9782739).

24243981 is a wasteful number, since it uses less digits than its factorization.

24243981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425355.

The product of its digits is 13824, while the sum is 33.

The square root of 24243981 is about 4923.8177261146. The cubic root of 24243981 is about 289.4240690253.

The spelling of 24243981 in words is "twenty-four million, two hundred forty-three thousand, nine hundred eighty-one".