238887505 has 8 divisors (see below), whose sum is σ = 287517672. Its totient is φ = 190541568.

The previous prime is 238887479. The next prime is 238887521. The reversal of 238887505 is 505788832.

It can be written as a sum of positive squares in 4 ways, for example, as 123201 + 238764304 = 351^2 + 15452^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 238887505 - 2¹⁷ = 238756433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69202 + ... + 72571.

It is an arithmetic number, because the mean of its divisors is an integer number (35939709).

Almost surely, 2^238887505 is an apocalyptic number.

It is an amenable number.

238887505 is a deficient number, since it is larger than the sum of its proper divisors (48630167).

238887505 is a wasteful number, since it uses less digits than its factorization.

238887505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142115.

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 238887505 is about 15455.9860571883. The cubic root of 238887505 is about 620.4847968557.

The spelling of 238887505 in words is "two hundred thirty-eight million, eight hundred eighty-seven thousand, five hundred five".