24138605 has 4 divisors (see below), whose sum is σ = 28966332. Its totient is φ = 19310880.

The previous prime is 24138577. The next prime is 24138613. The reversal of 24138605 is 50683142.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50683142 = 2 ⋅25341571.

It can be written as a sum of positive squares in 2 ways, for example, as 14115049 + 10023556 = 3757^2 + 3166^2 .

It is not a de Polignac number, because 24138605 - 2¹⁴ = 24122221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2413856 + ... + 2413865.

It is an arithmetic number, because the mean of its divisors is an integer number (7241583).

Almost surely, 2^24138605 is an apocalyptic number.

It is an amenable number.

24138605 is a deficient number, since it is larger than the sum of its proper divisors (4827727).

24138605 is an equidigital number, since it uses as much as digits as its factorization.

24138605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4827726.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 24138605 is about 4913.1054334301. The cubic root of 24138605 is about 289.0041346295.

The spelling of 24138605 in words is "twenty-four million, one hundred thirty-eight thousand, six hundred five".