288968978 has 4 divisors (see below), whose sum is σ = 433453470. Its totient is φ = 144484488.

The previous prime is 288968959. The next prime is 288968983. The reversal of 288968978 is 879869882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879869882 = 2 ⋅439934941.

It can be written as a sum of positive squares in only one way, i.e., 254945089 + 34023889 = 15967^2 + 5833^2 .

It is a Curzon 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, 72242243 + ... + 72242246.

Almost surely, 2^288968978 is an apocalyptic number.

288968978 is a deficient number, since it is larger than the sum of its proper divisors (144484492).

288968978 is a wasteful number, since it uses less digits than its factorization.

288968978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144484491.

The product of its digits is 27869184, while the sum is 65.

The square root of 288968978 is about 16999.0875637488. The cubic root of 288968978 is about 661.1252445273.

The spelling of 288968978 in words is "two hundred eighty-eight million, nine hundred sixty-eight thousand, nine hundred seventy-eight".