238517642 has 8 divisors (see below), whose sum is σ = 390301632. Its totient is φ = 108417100.

The previous prime is 238517641. The next prime is 238517647. The reversal of 238517642 is 246715832.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 238517596 and 238517605.

It is not an unprimeable number, because it can be changed into a prime (238517641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5420834 + ... + 5420877.

It is an arithmetic number, because the mean of its divisors is an integer number (48787704).

Almost surely, 2^238517642 is an apocalyptic number.

238517642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

238517642 is a deficient number, since it is larger than the sum of its proper divisors (151783990).

238517642 is a wasteful number, since it uses less digits than its factorization.

238517642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10841724.

The product of its digits is 80640, while the sum is 38.

The square root of 238517642 is about 15444.0163817577. The cubic root of 238517642 is about 620.1644048922.

The spelling of 238517642 in words is "two hundred thirty-eight million, five hundred seventeen thousand, six hundred forty-two".