238135878 has 36 divisors (see below), whose sum is σ = 534400308. Its totient is φ = 76636560.

The previous prime is 238135871. The next prime is 238135879. The reversal of 238135878 is 878531832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238135871) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 7273 + ... + 23003.

It is an arithmetic number, because the mean of its divisors is an integer number (14844453).

Almost surely, 2^238135878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238135878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267200154).

238135878 is an abundant number, since it is smaller than the sum of its proper divisors (296264430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238135878 is a wasteful number, since it uses less digits than its factorization.

238135878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15797 (or 15765 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 238135878 is about 15431.6518234439. The cubic root of 238135878 is about 619.8333561846.

The spelling of 238135878 in words is "two hundred thirty-eight million, one hundred thirty-five thousand, eight hundred seventy-eight".