238474657 has 8 divisors (see below), whose sum is σ = 259327656. Its totient is φ = 218380032.

The previous prime is 238474633. The next prime is 238474673. The reversal of 238474657 is 756474832.

It can be written as a sum of positive squares in 4 ways, for example, as 182763361 + 55711296 = 13519^2 + 7464^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 238474657 - 2¹¹ = 238472609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238474697) 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, 188938 + ... + 190195.

It is an arithmetic number, because the mean of its divisors is an integer number (32415957).

Almost surely, 2^238474657 is an apocalyptic number.

It is an amenable number.

238474657 is a deficient number, since it is larger than the sum of its proper divisors (20852999).

238474657 is a wasteful number, since it uses less digits than its factorization.

238474657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379187.

The product of its digits is 1128960, while the sum is 46.

The square root of 238474657 is about 15442.6246797622. The cubic root of 238474657 is about 620.1271478738.

The spelling of 238474657 in words is "two hundred thirty-eight million, four hundred seventy-four thousand, six hundred fifty-seven".