28030300305 has 24 divisors (see below), whose sum is σ = 52170682752. Its totient is φ = 12813851232.

The previous prime is 28030300303. The next prime is 28030300327. The reversal of 28030300305 is 50300303082.

It is not a de Polignac number, because 28030300305 - 2¹ = 28030300303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28030300303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19067497 + ... + 19068966.

It is an arithmetic number, because the mean of its divisors is an integer number (2173778448).

Almost surely, 2^28030300305 is an apocalyptic number.

It is an amenable number.

28030300305 is a deficient number, since it is larger than the sum of its proper divisors (24140382447).

28030300305 is a wasteful number, since it uses less digits than its factorization.

28030300305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38136485 (or 38136478 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 28030300305 its reverse (50300303082), we get a palindrome (78330603387).

The spelling of 28030300305 in words is "twenty-eight billion, thirty million, three hundred thousand, three hundred five".