28450448441 has 2 divisors, whose sum is σ = 28450448442. Its totient is φ = 28450448440.

The previous prime is 28450448419. The next prime is 28450448471. The reversal of 28450448441 is 14484405482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27620778025 + 829670416 = 166195^2 + 28804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28450448441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28450448392 and 28450448401.

It is not a weakly prime, because it can be changed into another prime (28450448401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14225224220 + 14225224221.

It is an arithmetic number, because the mean of its divisors is an integer number (14225224221).

Almost surely, 2^28450448441 is an apocalyptic number.

It is an amenable number.

28450448441 is a deficient number, since it is larger than the sum of its proper divisors (1).

28450448441 is an equidigital number, since it uses as much as digits as its factorization.

28450448441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 655360, while the sum is 44.

The spelling of 28450448441 in words is "twenty-eight billion, four hundred fifty million, four hundred forty-eight thousand, four hundred forty-one".