238278265 has 16 divisors (see below), whose sum is σ = 299730816. Its totient is φ = 181641600.

The previous prime is 238278253. The next prime is 238278311. The reversal of 238278265 is 562872832.

It is not a de Polignac number, because 238278265 - 2⁵ = 238278233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4701 + ... + 22330.

It is an arithmetic number, because the mean of its divisors is an integer number (18733176).

Almost surely, 2^238278265 is an apocalyptic number.

It is an amenable number.

238278265 is a deficient number, since it is larger than the sum of its proper divisors (61452551).

238278265 is a wasteful number, since it uses less digits than its factorization.

238278265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27120.

The product of its digits is 322560, while the sum is 43.

The square root of 238278265 is about 15436.2646064390. The cubic root of 238278265 is about 619.9568691814.

The spelling of 238278265 in words is "two hundred thirty-eight million, two hundred seventy-eight thousand, two hundred sixty-five".