28260328704 has 72 divisors (see below), whose sum is σ = 76120048032. Its totient is φ = 9306593280.

The previous prime is 28260328651. The next prime is 28260328741. The reversal of 28260328704 is 40782306282.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157927 + ... + 285414.

Almost surely, 2^28260328704 is an apocalyptic number.

28260328704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28260328704 is an abundant number, since it is smaller than the sum of its proper divisors (47859719328).

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

28260328704 is an equidigital number, since it uses as much as digits as its factorization.

28260328704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443443 (or 443429 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 28260328704 in words is "twenty-eight billion, two hundred sixty million, three hundred twenty-eight thousand, seven hundred four".