28288785265 has 32 divisors (see below), whose sum is σ = 38503987200. Its totient is φ = 19779344640.

The previous prime is 28288785253. The next prime is 28288785361. The reversal of 28288785265 is 56258788282.

It is not a de Polignac number, because 28288785265 - 2⁵ = 28288785233 is a prime.

It is a super-2 number, since 2×28288785265² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2549680 + ... + 2560750.

It is an arithmetic number, because the mean of its divisors is an integer number (1203249600).

Almost surely, 2^28288785265 is an apocalyptic number.

It is an amenable number.

28288785265 is a deficient number, since it is larger than the sum of its proper divisors (10215201935).

28288785265 is a wasteful number, since it uses less digits than its factorization.

28288785265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13177.

The product of its digits is 34406400, while the sum is 61.

The spelling of 28288785265 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred eighty-five thousand, two hundred sixty-five".