28201012 has 12 divisors (see below), whose sum is σ = 56402080. Its totient is φ = 12086136.

The previous prime is 28201009. The next prime is 28201031. The reversal of 28201012 is 21010282.

28201012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503562 + ... + 503617.

Almost surely, 2^28201012 is an apocalyptic number.

It is an amenable number.

28201012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28201012 is a wasteful number, since it uses less digits than its factorization.

28201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007190 (or 1007188 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 28201012 is about 5310.4625033984. The cubic root of 28201012 is about 304.3838209436.

Adding to 28201012 its reverse (21010282), we get a palindrome (49211294).

The spelling of 28201012 in words is "twenty-eight million, two hundred one thousand, twelve".