238884890 has 16 divisors (see below), whose sum is σ = 444820680. Its totient is φ = 92258880.

The previous prime is 238884887. The next prime is 238884941. The reversal of 238884890 is 98488832.

It can be written as a sum of positive squares in 4 ways, for example, as 138744841 + 100140049 = 11779^2 + 10007^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 411581 + ... + 412160.

Almost surely, 2^238884890 is an apocalyptic number.

238884890 is a deficient number, since it is larger than the sum of its proper divisors (205935790).

238884890 is a wasteful number, since it uses less digits than its factorization.

238884890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823777.

The product of its (nonzero) digits is 884736, while the sum is 50.

The square root of 238884890 is about 15455.9014619012. The cubic root of 238884890 is about 620.4825327863.

It can be divided in two parts, 2388 and 84890, that added together give a palindrome (87278).

The spelling of 238884890 in words is "two hundred thirty-eight million, eight hundred eighty-four thousand, eight hundred ninety".