28128846241 has 2 divisors, whose sum is σ = 28128846242. Its totient is φ = 28128846240.

The previous prime is 28128846223. The next prime is 28128846269. The reversal of 28128846241 is 14264882182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26275113216 + 1853733025 = 162096^2 + 43055^2 .

It is a cyclic number.

It is not a de Polignac number, because 28128846241 - 2⁵ = 28128846209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28128846191 and 28128846200.

It is not a weakly prime, because it can be changed into another prime (28128846211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14064423120 + 14064423121.

It is an arithmetic number, because the mean of its divisors is an integer number (14064423121).

Almost surely, 2^28128846241 is an apocalyptic number.

It is an amenable number.

28128846241 is a deficient number, since it is larger than the sum of its proper divisors (1).

28128846241 is an equidigital number, since it uses as much as digits as its factorization.

28128846241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393216, while the sum is 46.

It can be divided in two parts, 2812884 and 6241, that added together give a triangular number (2819125 = T₂₃₇₄).

The spelling of 28128846241 in words is "twenty-eight billion, one hundred twenty-eight million, eight hundred forty-six thousand, two hundred forty-one".