28912016 has 20 divisors (see below), whose sum is σ = 64019712. Its totient is φ = 12390816.

The previous prime is 28912007. The next prime is 28912031. The reversal of 28912016 is 61021982.

It is a self number, because there is not a number n which added to its sum of digits gives 28912016.

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, 128960 + ... + 129183.

Almost surely, 2^28912016 is an apocalyptic number.

It is an amenable number.

28912016 is an abundant number, since it is smaller than the sum of its proper divisors (35107696).

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

28912016 is a wasteful number, since it uses less digits than its factorization.

28912016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258158 (or 258152 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 28912016 is about 5376.9894922717. The cubic root of 28912016 is about 306.9206612383.

Adding to 28912016 its reverse (61021982), we get a palindrome (89933998).

The spelling of 28912016 in words is "twenty-eight million, nine hundred twelve thousand, sixteen".