238807881 has 24 divisors (see below), whose sum is σ = 372730176. Its totient is φ = 146463840.

The previous prime is 238807867. The next prime is 238807913. The reversal of 238807881 is 188708832.

It is a happy number.

It is not a de Polignac number, because 238807881 - 2⁷ = 238807753 is a prime.

It is a super-2 number, since 2×238807881² = 114058408055420322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (238807981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33106 + ... + 39668.

It is an arithmetic number, because the mean of its divisors is an integer number (15530424).

Almost surely, 2^238807881 is an apocalyptic number.

It is an amenable number.

238807881 is a deficient number, since it is larger than the sum of its proper divisors (133922295).

238807881 is a wasteful number, since it uses less digits than its factorization.

238807881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893 (or 6890 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 238807881 is about 15453.4100120329. The cubic root of 238807881 is about 620.4158509145.

The spelling of 238807881 in words is "two hundred thirty-eight million, eight hundred seven thousand, eight hundred eighty-one".