28300272012 has 18 divisors (see below), whose sum is σ = 71536798788. Its totient is φ = 9433423992.

The previous prime is 28300272001. The next prime is 28300272037. The reversal of 28300272012 is 21027200382.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 393059298 + ... + 393059369.

Almost surely, 2^28300272012 is an apocalyptic number.

It is an amenable number.

28300272012 is an abundant number, since it is smaller than the sum of its proper divisors (43236526776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28300272012 is a wasteful number, since it uses less digits than its factorization.

28300272012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786118677 (or 786118672 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 28300272012 its reverse (21027200382), we get a palindrome (49327472394).

The spelling of 28300272012 in words is "twenty-eight billion, three hundred million, two hundred seventy-two thousand, twelve".