28361201212 has 24 divisors (see below), whose sum is σ = 50584111200. Its totient is φ = 13908762816.

The previous prime is 28361201173. The next prime is 28361201233. The reversal of 28361201212 is 21210216382.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735714 + ... + 773302.

It is an arithmetic number, because the mean of its divisors is an integer number (2107671300).

Almost surely, 2^28361201212 is an apocalyptic number.

It is an amenable number.

28361201212 is a deficient number, since it is larger than the sum of its proper divisors (22222909988).

28361201212 is a wasteful number, since it uses less digits than its factorization.

28361201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41205 (or 41203 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 28361201212 its reverse (21210216382), we get a palindrome (49571417594).

The spelling of 28361201212 in words is "twenty-eight billion, three hundred sixty-one million, two hundred one thousand, two hundred twelve".