238718838840 has 64 divisors (see below), whose sum is σ = 725966906400. Its totient is φ = 62786322432.

The previous prime is 238718838817. The next prime is 238718838877. The reversal of 238718838840 is 48838817832.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13616745 + ... + 13634264.

Almost surely, 2^238718838840 is an apocalyptic number.

238718838840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238718838840 is an abundant number, since it is smaller than the sum of its proper divisors (487248067560).

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

238718838840 is a wasteful number, since it uses less digits than its factorization.

238718838840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27251096 (or 27251092 counting only the distinct ones).

The product of its (nonzero) digits is 16515072, while the sum is 60.

The spelling of 238718838840 in words is "two hundred thirty-eight billion, seven hundred eighteen million, eight hundred thirty-eight thousand, eight hundred forty".