238815585 has 24 divisors (see below), whose sum is σ = 414348480. Its totient is φ = 127244832.

The previous prime is 238815583. The next prime is 238815587. The reversal of 238815585 is 585518832.

It is an interprime number because it is at equal distance from previous prime (238815583) and next prime (238815587).

It is not a de Polignac number, because 238815585 - 2¹ = 238815583 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 238815585.

It is not an unprimeable number, because it can be changed into a prime (238815581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62356 + ... + 66074.

It is an arithmetic number, because the mean of its divisors is an integer number (17264520).

Almost surely, 2^238815585 is an apocalyptic number.

It is an amenable number.

238815585 is a deficient number, since it is larger than the sum of its proper divisors (175532895).

238815585 is a wasteful number, since it uses less digits than its factorization.

238815585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5157 (or 5154 counting only the distinct ones).

The product of its digits is 384000, while the sum is 45.

The square root of 238815585 is about 15453.6592753949. The cubic root of 238815585 is about 620.4225224312.

The spelling of 238815585 in words is "two hundred thirty-eight million, eight hundred fifteen thousand, five hundred eighty-five".