28228801 has 2 divisors, whose sum is σ = 28228802. Its totient is φ = 28228800.

The previous prime is 28228777. The next prime is 28228831. The reversal of 28228801 is 10882282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23030401 + 5198400 = 4799^2 + 2280^2 .

It is a cyclic number.

It is not a de Polignac number, because 28228801 - 2⁹ = 28228289 is a prime.

It is not a weakly prime, because it can be changed into another prime (28228831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14114400 + 14114401.

It is an arithmetic number, because the mean of its divisors is an integer number (14114401).

Almost surely, 2^28228801 is an apocalyptic number.

It is an amenable number.

28228801 is a deficient number, since it is larger than the sum of its proper divisors (1).

28228801 is an equidigital number, since it uses as much as digits as its factorization.

28228801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 28228801 is about 5313.0782979361. The cubic root of 28228801 is about 304.4837670638.

The spelling of 28228801 in words is "twenty-eight million, two hundred twenty-eight thousand, eight hundred one".