28305555336 has 48 divisors (see below), whose sum is σ = 76685307660. Its totient is φ = 9432178560.

The previous prime is 28305555329. The next prime is 28305555389. The reversal of 28305555336 is 63355550382.

28305555336 is a `hidden beast` number, since 2 + 8 + 305 + 5 + 5 + 5 + 336 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27772222500 + 533332836 = 166650^2 + 23094^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28305555291 and 28305555300.

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, 170886 + ... + 292938.

Almost surely, 2^28305555336 is an apocalyptic number.

It is an amenable number.

28305555336 is an abundant number, since it is smaller than the sum of its proper divisors (48379752324).

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

28305555336 is a wasteful number, since it uses less digits than its factorization.

28305555336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125286 (or 125279 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

The spelling of 28305555336 in words is "twenty-eight billion, three hundred five million, five hundred fifty-five thousand, three hundred thirty-six".