238478585 has 8 divisors (see below), whose sum is σ = 290866056. Its totient is φ = 187655040.

The previous prime is 238478573. The next prime is 238478599. The reversal of 238478585 is 585874832.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34245904 + 204232681 = 5852^2 + 14291^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-238478585 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 390644 + ... + 391253.

It is an arithmetic number, because the mean of its divisors is an integer number (36358257).

Almost surely, 2^238478585 is an apocalyptic number.

It is an amenable number.

238478585 is a deficient number, since it is larger than the sum of its proper divisors (52387471).

238478585 is an equidigital number, since it uses as much as digits as its factorization.

238478585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781963.

The product of its digits is 2150400, while the sum is 50.

The square root of 238478585 is about 15442.7518596913. The cubic root of 238478585 is about 620.1305526326.

The spelling of 238478585 in words is "two hundred thirty-eight million, four hundred seventy-eight thousand, five hundred eighty-five".