28812278265 has 16 divisors (see below), whose sum is σ = 46266076608. Its totient is φ = 15311071296.

The previous prime is 28812278263. The next prime is 28812278293. The reversal of 28812278265 is 56287221882.

It is a happy number.

It is not a de Polignac number, because 28812278265 - 2¹ = 28812278263 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28812278263) 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, 3463027 + ... + 3471336.

It is an arithmetic number, because the mean of its divisors is an integer number (2891629788).

Almost surely, 2^28812278265 is an apocalyptic number.

It is an amenable number.

28812278265 is a deficient number, since it is larger than the sum of its proper divisors (17453798343).

28812278265 is a wasteful number, since it uses less digits than its factorization.

28812278265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6934648.

The product of its digits is 1720320, while the sum is 51.

The spelling of 28812278265 in words is "twenty-eight billion, eight hundred twelve million, two hundred seventy-eight thousand, two hundred sixty-five".