28880265 has 16 divisors (see below), whose sum is σ = 46767168. Its totient is φ = 15216576.

The previous prime is 28880261. The next prime is 28880287. The reversal of 28880265 is 56208882.

It is not a de Polignac number, because 28880265 - 2² = 28880261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28880261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10354 + ... + 12843.

It is an arithmetic number, because the mean of its divisors is an integer number (2922948).

Almost surely, 2^28880265 is an apocalyptic number.

It is an amenable number.

28880265 is a deficient number, since it is larger than the sum of its proper divisors (17886903).

28880265 is a wasteful number, since it uses less digits than its factorization.

28880265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23288.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 28880265 is about 5374.0361926582. The cubic root of 28880265 is about 306.8082672841.

The spelling of 28880265 in words is "twenty-eight million, eight hundred eighty thousand, two hundred sixty-five".