28208066 has 16 divisors (see below), whose sum is σ = 44945280. Its totient is φ = 13231680.

The previous prime is 28208057. The next prime is 28208069. The reversal of 28208066 is 66080282.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28208069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11051 + ... + 13361.

It is an arithmetic number, because the mean of its divisors is an integer number (2809080).

Almost surely, 2^28208066 is an apocalyptic number.

28208066 is a deficient number, since it is larger than the sum of its proper divisors (16737214).

28208066 is a wasteful number, since it uses less digits than its factorization.

28208066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28208066 is about 5311.1266224785. The cubic root of 28208066 is about 304.4091976272.

The spelling of 28208066 in words is "twenty-eight million, two hundred eight thousand, sixty-six".