28055030305 has 8 divisors (see below), whose sum is σ = 33992891712. Its totient is φ = 22226120688.

The previous prime is 28055030299. The next prime is 28055030309. The reversal of 28055030305 is 50303055082.

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

It is a cyclic number.

It is not a de Polignac number, because 28055030305 - 2¹³ = 28055022113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28055030309) 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, 27237379 + ... + 27238408.

It is an arithmetic number, because the mean of its divisors is an integer number (4249111464).

Almost surely, 2^28055030305 is an apocalyptic number.

It is an amenable number.

28055030305 is a deficient number, since it is larger than the sum of its proper divisors (5937861407).

28055030305 is a wasteful number, since it uses less digits than its factorization.

28055030305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54475895.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 28055030305 its reverse (50303055082), we get a palindrome (78358085387).

The spelling of 28055030305 in words is "twenty-eight billion, fifty-five million, thirty thousand, three hundred five".