238358540 has 72 divisors (see below), whose sum is σ = 602426160. Its totient is φ = 78895488.

The previous prime is 238358521. The next prime is 238358557. The reversal of 238358540 is 45853832.

It is a junction number, because it is equal to n+sod(n) for n = 238358494 and 238358503.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24227 + ... + 32613.

It is an arithmetic number, because the mean of its divisors is an integer number (8367030).

Almost surely, 2^238358540 is an apocalyptic number.

238358540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238358540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301213080).

238358540 is an abundant number, since it is smaller than the sum of its proper divisors (364067620).

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

238358540 is a wasteful number, since it uses less digits than its factorization.

238358540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8439 (or 8430 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 238358540 is about 15438.8645955588. The cubic root of 238358540 is about 620.0264816993.

The spelling of 238358540 in words is "two hundred thirty-eight million, three hundred fifty-eight thousand, five hundred forty".