289783640842928 has 10 divisors (see below), whose sum is σ = 561455804133204. Its totient is φ = 144891820421456.

The previous prime is 289783640842921. The next prime is 289783640842999. The reversal of 289783640842928 is 829248046387982.

It is a happy number.

It is a super-2 number, since 2×289783640842928² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (289783640842921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9055738776326 + ... + 9055738776357.

Almost surely, 2^{289783640842928} is an apocalyptic number.

It is an amenable number.

289783640842928 is a deficient number, since it is larger than the sum of its proper divisors (271672163290276).

289783640842928 is a wasteful number, since it uses less digits than its factorization.

289783640842928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18111477552691 (or 18111477552685 counting only the distinct ones).

The product of its (nonzero) digits is 5350883328, while the sum is 80.

The spelling of 289783640842928 in words is "two hundred eighty-nine trillion, seven hundred eighty-three billion, six hundred forty million, eight hundred forty-two thousand, nine hundred twenty-eight".