238273257 has 8 divisors (see below), whose sum is σ = 317769376. Its totient is φ = 158812992.

The previous prime is 238273253. The next prime is 238273267. The reversal of 238273257 is 752372832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 238273257 - 2² = 238273253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238273253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19098 + ... + 29004.

It is an arithmetic number, because the mean of its divisors is an integer number (39721172).

Almost surely, 2^238273257 is an apocalyptic number.

It is an amenable number.

238273257 is a deficient number, since it is larger than the sum of its proper divisors (79496119).

238273257 is an equidigital number, since it uses as much as digits as its factorization.

238273257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17927.

The product of its digits is 141120, while the sum is 39.

The square root of 238273257 is about 15436.1023901761. The cubic root of 238273257 is about 619.9525258481.

The spelling of 238273257 in words is "two hundred thirty-eight million, two hundred seventy-three thousand, two hundred fifty-seven".