238900005 has 12 divisors (see below), whose sum is σ = 414093420. Its totient is φ = 127413312.

The previous prime is 238900003. The next prime is 238900007. The reversal of 238900005 is 500009832.

It is an interprime number because it is at equal distance from previous prime (238900003) and next prime (238900007).

It can be written as a sum of positive squares in 2 ways, for example, as 54863649 + 184036356 = 7407^2 + 13566^2 .

It is not a de Polignac number, because 238900005 - 2¹ = 238900003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238900001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2654400 + ... + 2654489.

It is an arithmetic number, because the mean of its divisors is an integer number (34507785).

Almost surely, 2^238900005 is an apocalyptic number.

It is an amenable number.

238900005 is a deficient number, since it is larger than the sum of its proper divisors (175193415).

238900005 is a wasteful number, since it uses less digits than its factorization.

238900005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308900 (or 5308897 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 238900005 is about 15456.3904259694. The cubic root of 238900005 is about 620.4956191389.

Adding to 238900005 its reverse (500009832), we get a palindrome (738909837).

The spelling of 238900005 in words is "two hundred thirty-eight million, nine hundred thousand, five".