238023140 has 12 divisors (see below), whose sum is σ = 499848636. Its totient is φ = 95209248.

The previous prime is 238023139. The next prime is 238023151. The reversal of 238023140 is 41320832.

It can be written as a sum of positive squares in 2 ways, for example, as 110965156 + 127057984 = 10534^2 + 11272^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5950559 + ... + 5950598.

It is an arithmetic number, because the mean of its divisors is an integer number (41654053).

Almost surely, 2^238023140 is an apocalyptic number.

238023140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238023140 is an abundant number, since it is smaller than the sum of its proper divisors (261825496).

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

238023140 is a wasteful number, since it uses less digits than its factorization.

238023140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11901166 (or 11901164 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 238023140 is about 15427.9985740212. The cubic root of 238023140 is about 619.7355271585.

Adding to 238023140 its reverse (41320832), we get a palindrome (279343972).

The spelling of 238023140 in words is "two hundred thirty-eight million, twenty-three thousand, one hundred forty".