289878068 has 6 divisors (see below), whose sum is σ = 507286626. Its totient is φ = 144939032.

The previous prime is 289878037. The next prime is 289878089. The reversal of 289878068 is 860878982.

It can be written as a sum of positive squares in only one way, i.e., 249071524 + 40806544 = 15782^2 + 6388^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 36234755 + ... + 36234762.

It is an arithmetic number, because the mean of its divisors is an integer number (84547771).

Almost surely, 2^289878068 is an apocalyptic number.

It is an amenable number.

289878068 is a deficient number, since it is larger than the sum of its proper divisors (217408558).

289878068 is a wasteful number, since it uses less digits than its factorization.

289878068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72469521 (or 72469519 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 56.

The square root of 289878068 is about 17025.8059427447. The cubic root of 289878068 is about 661.8178138869.

The spelling of 289878068 in words is "two hundred eighty-nine million, eight hundred seventy-eight thousand, sixty-eight".