238987255 has 16 divisors (see below), whose sum is σ = 317195424. Its totient is φ = 171711360.

The previous prime is 238987253. The next prime is 238987261. The reversal of 238987255 is 552789832.

It is not a de Polignac number, because 238987255 - 2¹ = 238987253 is a prime.

It is a super-2 number, since 2×238987255² = 114229816104870050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 238987199 and 238987208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238987253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47281 + ... + 52090.

It is an arithmetic number, because the mean of its divisors is an integer number (19824714).

Almost surely, 2^238987255 is an apocalyptic number.

238987255 is a deficient number, since it is larger than the sum of its proper divisors (78208169).

238987255 is a wasteful number, since it uses less digits than its factorization.

238987255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99426.

The product of its digits is 1209600, while the sum is 49.

The square root of 238987255 is about 15459.2126254865. The cubic root of 238987255 is about 620.5711481639.

The spelling of 238987255 in words is "two hundred thirty-eight million, nine hundred eighty-seven thousand, two hundred fifty-five".