24172138 has 8 divisors (see below), whose sum is σ = 37508580. Its totient is φ = 11669280.

The previous prime is 24172091. The next prime is 24172153. The reversal of 24172138 is 83127142.

It can be written as a sum of positive squares in 2 ways, for example, as 21557449 + 2614689 = 4643^2 + 1617^2 .

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

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, 208323 + ... + 208438.

Almost surely, 2^24172138 is an apocalyptic number.

24172138 is a deficient number, since it is larger than the sum of its proper divisors (13336442).

24172138 is a wasteful number, since it uses less digits than its factorization.

24172138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416792.

The product of its digits is 2688, while the sum is 28.

The square root of 24172138 is about 4916.5168564747. The cubic root of 24172138 is about 289.1378994914.

It can be divided in two parts, 24172 and 138, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 24172138 in words is "twenty-four million, one hundred seventy-two thousand, one hundred thirty-eight".