28064105600 has 48 divisors (see below), whose sum is σ = 69327118770. Its totient is φ = 11225640960.

The previous prime is 28064105593. The next prime is 28064105623. The reversal of 28064105600 is 650146082.

It can be written as a sum of positive squares in 3 ways, for example, as 15298721344 + 12765384256 = 123688^2 + 112984^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4381817 + ... + 4388216.

Almost surely, 2^28064105600 is an apocalyptic number.

28064105600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28064105600 is an abundant number, since it is smaller than the sum of its proper divisors (41263013170).

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

28064105600 is an equidigital number, since it uses as much as digits as its factorization.

28064105600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8770057 (or 8770040 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 28064105600 in words is "twenty-eight billion, sixty-four million, one hundred five thousand, six hundred".