28634747266 has 16 divisors (see below), whose sum is σ = 45484597656. Its totient is φ = 13473432576.

The previous prime is 28634747231. The next prime is 28634747269. The reversal of 28634747266 is 66274743682.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21775429225 + 6859318041 = 147565^2 + 82821^2 .

It is not an unprimeable number, because it can be changed into a prime (28634747269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234550 + ... + 335086.

Almost surely, 2^28634747266 is an apocalyptic number.

28634747266 is a deficient number, since it is larger than the sum of its proper divisors (16849850390).

28634747266 is a wasteful number, since it uses less digits than its factorization.

28634747266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108933.

The product of its digits is 16257024, while the sum is 55.

The spelling of 28634747266 in words is "twenty-eight billion, six hundred thirty-four million, seven hundred forty-seven thousand, two hundred sixty-six".