238174281728 has 112 divisors (see below), whose sum is σ = 505259583840. Its totient is φ = 111948595200.

The previous prime is 238174281703. The next prime is 238174281767. The reversal of 238174281728 is 827182471832.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 238174281728.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20384048 + ... + 20395728.

Almost surely, 2^238174281728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238174281728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252629791920).

238174281728 is an abundant number, since it is smaller than the sum of its proper divisors (267085302112).

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

238174281728 is a wasteful number, since it uses less digits than its factorization.

238174281728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11857 (or 11833 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 53.

The spelling of 238174281728 in words is "two hundred thirty-eight billion, one hundred seventy-four million, two hundred eighty-one thousand, seven hundred twenty-eight".