238238255 has 32 divisors (see below), whose sum is σ = 326135808. Its totient is φ = 166003200.

The previous prime is 238238251. The next prime is 238238261. The reversal of 238238255 is 552832832.

It is a happy number.

It is not a de Polignac number, because 238238255 - 2² = 238238251 is a prime.

It is a super-2 number, since 2×238238255² = 113514932290890050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238238251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58640 + ... + 62570.

It is an arithmetic number, because the mean of its divisors is an integer number (10191744).

Almost surely, 2^238238255 is an apocalyptic number.

238238255 is a deficient number, since it is larger than the sum of its proper divisors (87897553).

238238255 is a wasteful number, since it uses less digits than its factorization.

238238255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007.

The product of its digits is 115200, while the sum is 38.

The square root of 238238255 is about 15434.9685778754. The cubic root of 238238255 is about 619.9221676490.

The spelling of 238238255 in words is "two hundred thirty-eight million, two hundred thirty-eight thousand, two hundred fifty-five".