228787767786 has 32 divisors (see below), whose sum is σ = 459407996928. Its totient is φ = 75957433200.

The previous prime is 228787767713. The next prime is 228787767799. The reversal of 228787767786 is 687767787822.

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 15 ways as a sum of consecutive naturals, for example, 3716961 + ... + 3778011.

It is an arithmetic number, because the mean of its divisors is an integer number (14356499904).

Almost surely, 2^228787767786 is an apocalyptic number.

228787767786 is an abundant number, since it is smaller than the sum of its proper divisors (230620229142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228787767786 is a wasteful number, since it uses less digits than its factorization.

228787767786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63546.

The product of its digits is 1239146496, while the sum is 75.

The spelling of 228787767786 in words is "two hundred twenty-eight billion, seven hundred eighty-seven million, seven hundred sixty-seven thousand, seven hundred eighty-six".