28053310521 has 8 divisors (see below), whose sum is σ = 37542438784. Its totient is φ = 18633194640.

The previous prime is 28053310507. The next prime is 28053310541. The reversal of 28053310521 is 12501335082.

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

It is not a de Polignac number, because 28053310521 - 2¹⁰ = 28053309497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28053310541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17252146 + ... + 17253771.

It is an arithmetic number, because the mean of its divisors is an integer number (4692804848).

Almost surely, 2^28053310521 is an apocalyptic number.

It is an amenable number.

28053310521 is a deficient number, since it is larger than the sum of its proper divisors (9489128263).

28053310521 is a wasteful number, since it uses less digits than its factorization.

28053310521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34506191.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 28053310521 in words is "twenty-eight billion, fifty-three million, three hundred ten thousand, five hundred twenty-one".