28802220448 has 12 divisors (see below), whose sum is σ = 56704371570. Its totient is φ = 14401110208.

The previous prime is 28802220431. The next prime is 28802220449. The reversal of 28802220448 is 84402220882.

It can be written as a sum of positive squares in only one way, i.e., 26260850704 + 2541369744 = 162052^2 + 50412^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28802220448.

It is not an unprimeable number, because it can be changed into a prime (28802220449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450034663 + ... + 450034726.

Almost surely, 2^28802220448 is an apocalyptic number.

It is an amenable number.

28802220448 is a deficient number, since it is larger than the sum of its proper divisors (27902151122).

28802220448 is an equidigital number, since it uses as much as digits as its factorization.

28802220448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900069399 (or 900069391 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The spelling of 28802220448 in words is "twenty-eight billion, eight hundred two million, two hundred twenty thousand, four hundred forty-eight".