28693893705 has 8 divisors (see below), whose sum is σ = 45910229952. Its totient is φ = 15303409968.

The previous prime is 28693893677. The next prime is 28693893721. The reversal of 28693893705 is 50739839682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28693893705 - 2⁵ = 28693893673 is a prime.

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, 956463109 + ... + 956463138.

It is an arithmetic number, because the mean of its divisors is an integer number (5738778744).

Almost surely, 2^28693893705 is an apocalyptic number.

It is an amenable number.

28693893705 is a deficient number, since it is larger than the sum of its proper divisors (17216336247).

28693893705 is a wasteful number, since it uses less digits than its factorization.

28693893705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912926255.

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 28693893705 in words is "twenty-eight billion, six hundred ninety-three million, eight hundred ninety-three thousand, seven hundred five".