28001607064 has 32 divisors (see below), whose sum is σ = 52779917520. Its totient is φ = 13927136256.

The previous prime is 28001607041. The next prime is 28001607113. The reversal of 28001607064 is 46070610082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1332124 + ... + 1352980.

Almost surely, 2^28001607064 is an apocalyptic number.

It is an amenable number.

28001607064 is a deficient number, since it is larger than the sum of its proper divisors (24778310456).

28001607064 is a wasteful number, since it uses less digits than its factorization.

28001607064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21739 (or 21735 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 28001607064 in words is "twenty-eight billion, one million, six hundred seven thousand, sixty-four".