28585563264 has 96 divisors (see below), whose sum is σ = 84911523840. Its totient is φ = 9221137920.

The previous prime is 28585563247. The next prime is 28585563283. The reversal of 28585563264 is 46236558582.

28585563264 is a `hidden beast` number, since 2 + 8 + 58 + 5 + 563 + 26 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 28585563264.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364512 + ... + 435935.

It is an arithmetic number, because the mean of its divisors is an integer number (884495040).

Almost surely, 2^28585563264 is an apocalyptic number.

28585563264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28585563264 is an abundant number, since it is smaller than the sum of its proper divisors (56325960576).

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

28585563264 is a wasteful number, since it uses less digits than its factorization.

28585563264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800498 (or 800483 counting only the distinct ones).

The product of its digits is 13824000, while the sum is 54.

The spelling of 28585563264 in words is "twenty-eight billion, five hundred eighty-five million, five hundred sixty-three thousand, two hundred sixty-four".