28905740686003 has 4 divisors (see below), whose sum is σ = 28907997373080. Its totient is φ = 28903483998928.

The previous prime is 28905740685971. The next prime is 28905740686093. The reversal of 28905740686003 is 30068604750982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28905740686003 - 2⁵ = 28905740685971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28905740686093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128324325 + ... + 1128349942.

It is an arithmetic number, because the mean of its divisors is an integer number (7226999343270).

Almost surely, 2^{28905740686003} is an apocalyptic number.

28905740686003 is a deficient number, since it is larger than the sum of its proper divisors (2256687077).

28905740686003 is a wasteful number, since it uses less digits than its factorization.

28905740686003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256687076.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 28905740686003 in words is "twenty-eight trillion, nine hundred five billion, seven hundred forty million, six hundred eighty-six thousand, three".