28663001266 has 64 divisors (see below), whose sum is σ = 50131872000. Its totient is φ = 12198574080.

The previous prime is 28663001207. The next prime is 28663001333. The reversal of 28663001266 is 66210036682.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 1658731 + ... + 1675921.

It is an arithmetic number, because the mean of its divisors is an integer number (783310500).

Almost surely, 2^28663001266 is an apocalyptic number.

28663001266 is a deficient number, since it is larger than the sum of its proper divisors (21468870734).

28663001266 is a wasteful number, since it uses less digits than its factorization.

28663001266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17347.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 28663001266 in words is "twenty-eight billion, six hundred sixty-three million, one thousand, two hundred sixty-six".