238917217434 has 64 divisors (see below), whose sum is σ = 564756160512. Its totient is φ = 65937758400.

The previous prime is 238917217423. The next prime is 238917217453. The reversal of 238917217434 is 434712719832.

238917217434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 534789 + ... + 873975.

It is an arithmetic number, because the mean of its divisors is an integer number (8824315008).

Almost surely, 2^238917217434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238917217434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282378080256).

238917217434 is an abundant number, since it is smaller than the sum of its proper divisors (325838943078).

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

238917217434 is a wasteful number, since it uses less digits than its factorization.

238917217434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339771.

The product of its digits is 2032128, while the sum is 51.

The spelling of 238917217434 in words is "two hundred thirty-eight billion, nine hundred seventeen million, two hundred seventeen thousand, four hundred thirty-four".