28965265 has 16 divisors (see below), whose sum is σ = 40799232. Its totient is φ = 19324224.

The previous prime is 28965259. The next prime is 28965269. The reversal of 28965265 is 56256982.

28965265 = T₁₉₆ + T₁₉₇ + ... + T₅₆₅.

It is a cyclic number.

It is not a de Polignac number, because 28965265 - 2⁷ = 28965137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28965269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9889 + ... + 12478.

It is an arithmetic number, because the mean of its divisors is an integer number (2549952).

Almost surely, 2^28965265 is an apocalyptic number.

It is an amenable number.

28965265 is a deficient number, since it is larger than the sum of its proper divisors (11833967).

28965265 is a wasteful number, since it uses less digits than its factorization.

28965265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22416.

The product of its digits is 259200, while the sum is 43.

The square root of 28965265 is about 5381.9387770579. The cubic root of 28965265 is about 307.1089704302.

The spelling of 28965265 in words is "twenty-eight million, nine hundred sixty-five thousand, two hundred sixty-five".