28918066 has 8 divisors (see below), whose sum is σ = 44300160. Its totient is φ = 14151348.

The previous prime is 28918063. The next prime is 28918067. The reversal of 28918066 is 66081982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28918063) by changing a digit.

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, 153726 + ... + 153913.

It is an arithmetic number, because the mean of its divisors is an integer number (5537520).

Almost surely, 2^28918066 is an apocalyptic number.

28918066 is a deficient number, since it is larger than the sum of its proper divisors (15382094).

28918066 is a wasteful number, since it uses less digits than its factorization.

28918066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307688.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 28918066 is about 5377.5520453083. The cubic root of 28918066 is about 306.9420680298.

The spelling of 28918066 in words is "twenty-eight million, nine hundred eighteen thousand, sixty-six".