238867665 has 8 divisors (see below), whose sum is σ = 382188288. Its totient is φ = 127396080.

The previous prime is 238867637. The next prime is 238867669. The reversal of 238867665 is 566768832.

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

It is not a de Polignac number, because 238867665 - 2¹⁹ = 238343377 is a prime.

It is a super-2 number, since 2×238867665² = 114115522765104450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238867669) 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, 7962241 + ... + 7962270.

It is an arithmetic number, because the mean of its divisors is an integer number (47773536).

Almost surely, 2^238867665 is an apocalyptic number.

It is an amenable number.

238867665 is a deficient number, since it is larger than the sum of its proper divisors (143320623).

238867665 is a wasteful number, since it uses less digits than its factorization.

238867665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15924519.

The product of its digits is 2903040, while the sum is 51.

The square root of 238867665 is about 15455.3442213365. The cubic root of 238867665 is about 620.4676189527.

It can be divided in two parts, 238 and 867665, that added together give a triangular number (867903 = T₁₃₁₇).

The spelling of 238867665 in words is "two hundred thirty-eight million, eight hundred sixty-seven thousand, six hundred sixty-five".