28026729705 has 64 divisors (see below), whose sum is σ = 49915772928. Its totient is φ = 13335079680.

The previous prime is 28026729691. The next prime is 28026729721. The reversal of 28026729705 is 50792762082.

It is not a de Polignac number, because 28026729705 - 2¹¹ = 28026727657 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5359302 + ... + 5364528.

It is an arithmetic number, because the mean of its divisors is an integer number (779933952).

Almost surely, 2^28026729705 is an apocalyptic number.

It is an amenable number.

28026729705 is a deficient number, since it is larger than the sum of its proper divisors (21889043223).

28026729705 is a wasteful number, since it uses less digits than its factorization.

28026729705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6166.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 28026729705 in words is "twenty-eight billion, twenty-six million, seven hundred twenty-nine thousand, seven hundred five".