238884681 has 16 divisors (see below), whose sum is σ = 369449984. Its totient is φ = 134467344.

The previous prime is 238884673. The next prime is 238884733. The reversal of 238884681 is 186488832.

It is not a de Polignac number, because 238884681 - 2³ = 238884673 is a prime.

It is a super-2 number, since 2×238884681² = 114131781632943522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238884681.

It is not an unprimeable number, because it can be changed into a prime (238884641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83485 + ... + 86298.

It is an arithmetic number, because the mean of its divisors is an integer number (23090624).

Almost surely, 2^238884681 is an apocalyptic number.

238884681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

238884681 is a deficient number, since it is larger than the sum of its proper divisors (130565303).

238884681 is a wasteful number, since it uses less digits than its factorization.

238884681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169860.

The product of its digits is 589824, while the sum is 48.

The square root of 238884681 is about 15455.8947007283. The cubic root of 238884681 is about 620.4823518332.

The spelling of 238884681 in words is "two hundred thirty-eight million, eight hundred eighty-four thousand, six hundred eighty-one".