238705705 has 16 divisors (see below), whose sum is σ = 334051200. Its totient is φ = 163682736.

The previous prime is 238705679. The next prime is 238705729. The reversal of 238705705 is 507507832.

238705705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238705705 - 2⁹ = 238705193 is a prime.

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, 67879 + ... + 71308.

It is an arithmetic number, because the mean of its divisors is an integer number (20878200).

Almost surely, 2^238705705 is an apocalyptic number.

It is an amenable number.

238705705 is a deficient number, since it is larger than the sum of its proper divisors (95345495).

238705705 is an equidigital number, since it uses as much as digits as its factorization.

238705705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139213 (or 139199 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 238705705 is about 15450.1037213347. The cubic root of 238705705 is about 620.3273548778.

The spelling of 238705705 in words is "two hundred thirty-eight million, seven hundred five thousand, seven hundred five".