238139535 has 16 divisors (see below), whose sum is σ = 381617280. Its totient is φ = 126809760.

The previous prime is 238139527. The next prime is 238139537. The reversal of 238139535 is 535931832.

It is not a de Polignac number, because 238139535 - 2³ = 238139527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238139493 and 238139502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238139537) 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, 2161 + ... + 21930.

It is an arithmetic number, because the mean of its divisors is an integer number (23851080).

Almost surely, 2^238139535 is an apocalyptic number.

238139535 is a deficient number, since it is larger than the sum of its proper divisors (143477745).

238139535 is a wasteful number, since it uses less digits than its factorization.

238139535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24758.

The product of its digits is 97200, while the sum is 39.

The square root of 238139535 is about 15431.7703132207. The cubic root of 238139535 is about 619.8365290496.

The spelling of 238139535 in words is "two hundred thirty-eight million, one hundred thirty-nine thousand, five hundred thirty-five".