28318051266 has 32 divisors (see below), whose sum is σ = 56769599040. Its totient is φ = 9417129984.

The previous prime is 28318051261. The next prime is 28318051297. The reversal of 28318051266 is 66215081382.

It is not an unprimeable number, because it can be changed into a prime (28318051261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5317281 + ... + 5322603.

It is an arithmetic number, because the mean of its divisors is an integer number (1774049970).

Almost surely, 2^28318051266 is an apocalyptic number.

28318051266 is an abundant number, since it is smaller than the sum of its proper divisors (28451547774).

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

28318051266 is a wasteful number, since it uses less digits than its factorization.

28318051266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7250.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 28318051266 in words is "twenty-eight billion, three hundred eighteen million, fifty-one thousand, two hundred sixty-six".