238671738 has 32 divisors (see below), whose sum is σ = 561582720. Its totient is φ = 74877120.

The previous prime is 238671737. The next prime is 238671743. The reversal of 238671738 is 837176832.

It is a junction number, because it is equal to n+sod(n) for n = 238671693 and 238671702.

It is not an unprimeable number, because it can be changed into a prime (238671733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129078 + ... + 130913.

It is an arithmetic number, because the mean of its divisors is an integer number (17549460).

Almost surely, 2^238671738 is an apocalyptic number.

238671738 is an abundant number, since it is smaller than the sum of its proper divisors (322910982).

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

238671738 is a wasteful number, since it uses less digits than its factorization.

238671738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260019 (or 260013 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 238671738 is about 15449.0044339433. The cubic root of 238671738 is about 620.2979299997.

The spelling of 238671738 in words is "two hundred thirty-eight million, six hundred seventy-one thousand, seven hundred thirty-eight".