238345557 has 24 divisors (see below), whose sum is σ = 338876640. Its totient is φ = 148975200.

The previous prime is 238345537. The next prime is 238345571. The reversal of 238345557 is 755543832.

It is a happy number.

It is not a de Polignac number, because 238345557 - 2⁸ = 238345301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238345537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108294 + ... + 110472.

It is an arithmetic number, because the mean of its divisors is an integer number (14119860).

Almost surely, 2^238345557 is an apocalyptic number.

It is an amenable number.

238345557 is a deficient number, since it is larger than the sum of its proper divisors (100531083).

238345557 is a wasteful number, since it uses less digits than its factorization.

238345557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321 (or 2302 counting only the distinct ones).

The product of its digits is 504000, while the sum is 42.

The square root of 238345557 is about 15438.4441249758. Note that the first 3 decimals coincide. The cubic root of 238345557 is about 620.0152242186.

The spelling of 238345557 in words is "two hundred thirty-eight million, three hundred forty-five thousand, five hundred fifty-seven".