28843587556 has 45 divisors (see below), whose sum is σ = 58919485961. Its totient is φ = 12354404496.

The previous prime is 28843587533. The next prime is 28843587559. The reversal of 28843587556 is 65578534882.

The square root of 28843587556 is 169834.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12811976100 + 16031611456 = 113190^2 + 126616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28843587494 and 28843587503.

It is not an unprimeable number, because it can be changed into a prime (28843587559) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 16642866 + ... + 16644598.

Almost surely, 2^28843587556 is an apocalyptic number.

28843587556 is the 169834-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28843587556

28843587556 is an abundant number, since it is smaller than the sum of its proper divisors (30075898405).

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

28843587556 is an frugal number, since it uses more digits than its factorization.

28843587556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498 (or 1742 counting only the distinct ones).

The product of its digits is 64512000, while the sum is 61.

The spelling of 28843587556 in words is "twenty-eight billion, eight hundred forty-three million, five hundred eighty-seven thousand, five hundred fifty-six".