28550587264 has 16 divisors (see below), whose sum is σ = 56878123320. Its totient is φ = 14275293568.

The previous prime is 28550587223. The next prime is 28550587279. The reversal of 28550587264 is 46278505582.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111525604 + ... + 111525859.

Almost surely, 2^28550587264 is an apocalyptic number.

It is an amenable number.

28550587264 is a deficient number, since it is larger than the sum of its proper divisors (28327536056).

28550587264 is an equidigital number, since it uses as much as digits as its factorization.

28550587264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223051477 (or 223051465 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 52.

The spelling of 28550587264 in words is "twenty-eight billion, five hundred fifty million, five hundred eighty-seven thousand, two hundred sixty-four".