28330066 has 12 divisors (see below), whose sum is σ = 44424702. Its totient is φ = 13548656.

The previous prime is 28330051. The next prime is 28330073. The reversal of 28330066 is 66003382.

It can be written as a sum of positive squares in only one way, i.e., 27258841 + 1071225 = 5221^2 + 1035^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12331 + ... + 14446.

Almost surely, 2^28330066 is an apocalyptic number.

28330066 is a deficient number, since it is larger than the sum of its proper divisors (16094636).

28330066 is a wasteful number, since it uses less digits than its factorization.

28330066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26825 (or 26802 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 28330066 is about 5322.5995528501. The cubic root of 28330066 is about 304.8474234622.

The spelling of 28330066 in words is "twenty-eight million, three hundred thirty thousand, sixty-six".