24247138 has 4 divisors (see below), whose sum is σ = 36370710. Its totient is φ = 12123568.

The previous prime is 24247133. The next prime is 24247147. The reversal of 24247138 is 83174242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23357889 + 889249 = 4833^2 + 943^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (24247133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061783 + ... + 6061786.

Almost surely, 2^24247138 is an apocalyptic number.

24247138 is a deficient number, since it is larger than the sum of its proper divisors (12123572).

24247138 is a wasteful number, since it uses less digits than its factorization.

24247138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12123571.

The product of its digits is 10752, while the sum is 31.

The square root of 24247138 is about 4924.1383002511. The cubic root of 24247138 is about 289.4366312104.

The spelling of 24247138 in words is "twenty-four million, two hundred forty-seven thousand, one hundred thirty-eight".