28800365 has 16 divisors (see below), whose sum is σ = 37825920. Its totient is φ = 20877120.

The previous prime is 28800361. The next prime is 28800377. The reversal of 28800365 is 56300882.

It is not a de Polignac number, because 28800365 - 2² = 28800361 is a prime.

It is a super-2 number, since 2×28800365² = 1658922048266450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28800361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21176 + ... + 22494.

It is an arithmetic number, because the mean of its divisors is an integer number (2364120).

Almost surely, 2^28800365 is an apocalyptic number.

It is an amenable number.

28800365 is a deficient number, since it is larger than the sum of its proper divisors (9025555).

28800365 is a wasteful number, since it uses less digits than its factorization.

28800365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28800365 is about 5366.5971527589. The cubic root of 28800365 is about 306.5250678730.

The spelling of 28800365 in words is "twenty-eight million, eight hundred thousand, three hundred sixty-five".