238516630040 has 128 divisors (see below), whose sum is σ = 596985016320. Its totient is φ = 85170009600.

The previous prime is 238516630019. The next prime is 238516630043. The reversal of 238516630040 is 40036615832.

It is a junction number, because it is equal to n+sod(n) for n = 238516629976 and 238516630003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238516630043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29769635 + ... + 29777645.

It is an arithmetic number, because the mean of its divisors is an integer number (4663945440).

Almost surely, 2^238516630040 is an apocalyptic number.

238516630040 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 238516630040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298492508160).

238516630040 is an abundant number, since it is smaller than the sum of its proper divisors (358468386280).

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

238516630040 is a wasteful number, since it uses less digits than its factorization.

238516630040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9913 (or 9909 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 238516630040 in words is "two hundred thirty-eight billion, five hundred sixteen million, six hundred thirty thousand, forty".