238378647 has 32 divisors (see below), whose sum is σ = 358783488. Its totient is φ = 139683456.

The previous prime is 238378631. The next prime is 238378669. The reversal of 238378647 is 746873832.

It is not a de Polignac number, because 238378647 - 2⁴ = 238378631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238378596 and 238378605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238378687) 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 31 ways as a sum of consecutive naturals, for example, 262368 + ... + 263274.

It is an arithmetic number, because the mean of its divisors is an integer number (11211984).

Almost surely, 2^238378647 is an apocalyptic number.

238378647 is a deficient number, since it is larger than the sum of its proper divisors (120404841).

238378647 is a wasteful number, since it uses less digits than its factorization.

238378647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239.

The product of its digits is 1354752, while the sum is 48.

The square root of 238378647 is about 15439.5157631320. The cubic root of 238378647 is about 620.0439155504.

It can be divided in two parts, 238 and 378647, that added together give a triangular number (378885 = T₈₇₀).

The spelling of 238378647 in words is "two hundred thirty-eight million, three hundred seventy-eight thousand, six hundred forty-seven".