238129816 has 16 divisors (see below), whose sum is σ = 446694840. Its totient is φ = 119011200.

The previous prime is 238129813. The next prime is 238129847. The reversal of 238129816 is 618921832.

238129816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238129813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17095 + ... + 27721.

Almost surely, 2^238129816 is an apocalyptic number.

It is an amenable number.

238129816 is a deficient number, since it is larger than the sum of its proper divisors (208565024).

238129816 is a wasteful number, since it uses less digits than its factorization.

238129816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13434 (or 13430 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 238129816 is about 15431.4554077054. The cubic root of 238129816 is about 619.8280966360.

The spelling of 238129816 in words is "two hundred thirty-eight million, one hundred twenty-nine thousand, eight hundred sixteen".