28587256960 has 32 divisors (see below), whose sum is σ = 68341412700. Its totient is φ = 11434902528.

The previous prime is 28587256931. The next prime is 28587256963. The reversal of 28587256960 is 6965278582.

It can be written as a sum of positive squares in 2 ways, for example, as 28296622656 + 290634304 = 168216^2 + 17048^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 28587256895 and 28587256904.

It is not an unprimeable number, because it can be changed into a prime (28587256963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22333155 + ... + 22334434.

Almost surely, 2^28587256960 is an apocalyptic number.

28587256960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28587256960 is an abundant number, since it is smaller than the sum of its proper divisors (39754155740).

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

28587256960 is an equidigital number, since it uses as much as digits as its factorization.

28587256960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44667608 (or 44667596 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 28587256960 in words is "twenty-eight billion, five hundred eighty-seven million, two hundred fifty-six thousand, nine hundred sixty".