238257481 has 16 divisors (see below), whose sum is σ = 298045440. Its totient is φ = 185032080.

The previous prime is 238257463. The next prime is 238257493. The reversal of 238257481 is 184752832.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 238257481 - 2⁷ = 238257353 is a prime.

It is a super-2 number, since 2×238257481² = 113533254504930722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238257421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18600 + ... + 28678.

It is an arithmetic number, because the mean of its divisors is an integer number (18627840).

Almost surely, 2^238257481 is an apocalyptic number.

It is an amenable number.

238257481 is a deficient number, since it is larger than the sum of its proper divisors (59787959).

238257481 is a wasteful number, since it uses less digits than its factorization.

238257481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10404.

The product of its digits is 107520, while the sum is 40.

The square root of 238257481 is about 15435.5913718911. The cubic root of 238257481 is about 619.9388432566.

The spelling of 238257481 in words is "two hundred thirty-eight million, two hundred fifty-seven thousand, four hundred eighty-one".