238405585 has 16 divisors (see below), whose sum is σ = 312511680. Its totient is φ = 173154240.

The previous prime is 238405579. The next prime is 238405669. The reversal of 238405585 is 585504832.

It is not a de Polignac number, because 238405585 - 2³ = 238405577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46111 + ... + 51019.

It is an arithmetic number, because the mean of its divisors is an integer number (19531980).

Almost surely, 2^238405585 is an apocalyptic number.

It is an amenable number.

238405585 is a deficient number, since it is larger than the sum of its proper divisors (74106095).

238405585 is a wasteful number, since it uses less digits than its factorization.

238405585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5808.

The product of its (nonzero) digits is 192000, while the sum is 40.

The square root of 238405585 is about 15440.3881104071. The cubic root of 238405585 is about 620.0672707098.

The spelling of 238405585 in words is "two hundred thirty-eight million, four hundred five thousand, five hundred eighty-five".