28330065 has 24 divisors (see below), whose sum is σ = 49802688. Its totient is φ = 14894880.

The previous prime is 28330051. The next prime is 28330073. The reversal of 28330065 is 56003382.

It is not a de Polignac number, because 28330065 - 2⁵ = 28330033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1239 + ... + 7628.

It is an arithmetic number, because the mean of its divisors is an integer number (2075112).

Almost surely, 2^28330065 is an apocalyptic number.

It is an amenable number.

28330065 is a deficient number, since it is larger than the sum of its proper divisors (21472623).

28330065 is a wasteful number, since it uses less digits than its factorization.

28330065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8949 (or 8946 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 28330065 is about 5322.5994589110. The cubic root of 28330065 is about 304.8474198754.

The spelling of 28330065 in words is "twenty-eight million, three hundred thirty thousand, sixty-five".