288891338 has 8 divisors (see below), whose sum is σ = 445048932. Its totient is φ = 140541696.

The previous prime is 288891299. The next prime is 288891391. The reversal of 288891338 is 833198882.

288891338 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 282475249 + 6416089 = 16807^2 + 2533^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1951895 + ... + 1952042.

Almost surely, 2^288891338 is an apocalyptic number.

288891338 is a deficient number, since it is larger than the sum of its proper divisors (156157594).

288891338 is a wasteful number, since it uses less digits than its factorization.

288891338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903976.

The product of its digits is 663552, while the sum is 50.

The square root of 288891338 is about 16996.8037583541. The cubic root of 288891338 is about 661.0660289878.

The spelling of 288891338 in words is "two hundred eighty-eight million, eight hundred ninety-one thousand, three hundred thirty-eight".