28782227265 has 32 divisors (see below), whose sum is σ = 50378112000. Its totient is φ = 13916118720.

The previous prime is 28782227239. The next prime is 28782227267. The reversal of 28782227265 is 56272228782.

It is not a de Polignac number, because 28782227265 - 2⁷ = 28782227137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28782227267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183715 + ... + 302184.

It is an arithmetic number, because the mean of its divisors is an integer number (1574316000).

Almost surely, 2^28782227265 is an apocalyptic number.

It is an amenable number.

28782227265 is a deficient number, since it is larger than the sum of its proper divisors (21595884735).

28782227265 is a wasteful number, since it uses less digits than its factorization.

28782227265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486277.

The product of its digits is 3010560, while the sum is 51.

The spelling of 28782227265 in words is "twenty-eight billion, seven hundred eighty-two million, two hundred twenty-seven thousand, two hundred sixty-five".