28604728754201 has 4 divisors (see below), whose sum is σ = 28604767202100. Its totient is φ = 28604690306304.

The previous prime is 28604728754159. The next prime is 28604728754207. The reversal of 28604728754201 is 10245782740682.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15408364771801 + 13196363982400 = 3925349^2 + 3632680^2 .

It is a cyclic number.

It is not a de Polignac number, because 28604728754201 - 2¹⁰ = 28604728753177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28604728754207) 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, 18085496 + ... + 19603433.

It is an arithmetic number, because the mean of its divisors is an integer number (7151191800525).

Almost surely, 2^{28604728754201} is an apocalyptic number.

It is an amenable number.

28604728754201 is a deficient number, since it is larger than the sum of its proper divisors (38447899).

28604728754201 is an equidigital number, since it uses as much as digits as its factorization.

28604728754201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38447898.

The product of its (nonzero) digits is 12042240, while the sum is 56.

The spelling of 28604728754201 in words is "twenty-eight trillion, six hundred four billion, seven hundred twenty-eight million, seven hundred fifty-four thousand, two hundred one".