28416265 has 16 divisors (see below), whose sum is σ = 36310032. Its totient is φ = 21274624.

The previous prime is 28416263. The next prime is 28416277. The reversal of 28416265 is 56261482.

It can be written as a sum of positive squares in 8 ways, for example, as 11614464 + 16801801 = 3408^2 + 4099^2 .

It is a cyclic number.

It is not a de Polignac number, because 28416265 - 2¹ = 28416263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28416265.

It is not an unprimeable number, because it can be changed into a prime (28416263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15897 + ... + 17593.

It is an arithmetic number, because the mean of its divisors is an integer number (2269377).

Almost surely, 2^28416265 is an apocalyptic number.

It is an amenable number.

28416265 is a deficient number, since it is larger than the sum of its proper divisors (7893767).

28416265 is a wasteful number, since it uses less digits than its factorization.

28416265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916.

The product of its digits is 23040, while the sum is 34.

The square root of 28416265 is about 5330.6908557897. The cubic root of 28416265 is about 305.1562936302.

The spelling of 28416265 in words is "twenty-eight million, four hundred sixteen thousand, two hundred sixty-five".