28258476502747 has 4 divisors (see below), whose sum is σ = 29920739826456. Its totient is φ = 26596213179040.

The previous prime is 28258476502721. The next prime is 28258476502769. The reversal of 28258476502747 is 74720567485282.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28258476502747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28258476502777) 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, 831131661829 + ... + 831131661862.

It is an arithmetic number, because the mean of its divisors is an integer number (7480184956614).

Almost surely, 2^{28258476502747} is an apocalyptic number.

28258476502747 is a deficient number, since it is larger than the sum of its proper divisors (1662263323709).

28258476502747 is a wasteful number, since it uses less digits than its factorization.

28258476502747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662263323708.

The product of its (nonzero) digits is 421478400, while the sum is 67.

The spelling of 28258476502747 in words is "twenty-eight trillion, two hundred fifty-eight billion, four hundred seventy-six million, five hundred two thousand, seven hundred forty-seven".