28058002568 has 8 divisors (see below), whose sum is σ = 52608754830. Its totient is φ = 14029001280.

The previous prime is 28058002549. The next prime is 28058002591. The reversal of 28058002568 is 86520085082.

It can be written as a sum of positive squares in only one way, i.e., 27981929284 + 76073284 = 167278^2 + 8722^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1753625153 + ... + 1753625168.

Almost surely, 2^28058002568 is an apocalyptic number.

It is an amenable number.

28058002568 is a deficient number, since it is larger than the sum of its proper divisors (24550752262).

28058002568 is a wasteful number, since it uses less digits than its factorization.

28058002568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507250327 (or 3507250323 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 28058002568 in words is "twenty-eight billion, fifty-eight million, two thousand, five hundred sixty-eight".