28848121 has 2 divisors, whose sum is σ = 28848122. Its totient is φ = 28848120.

The previous prime is 28848119. The next prime is 28848139. The reversal of 28848121 is 12184882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28772496 + 75625 = 5364^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 28848121 - 2¹ = 28848119 is a prime.

Together with 28848119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28848151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14424060 + 14424061.

It is an arithmetic number, because the mean of its divisors is an integer number (14424061).

Almost surely, 2^28848121 is an apocalyptic number.

It is an amenable number.

28848121 is a deficient number, since it is larger than the sum of its proper divisors (1).

28848121 is an equidigital number, since it uses as much as digits as its factorization.

28848121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8192, while the sum is 34.

The square root of 28848121 is about 5371.0446842304. The cubic root of 28848121 is about 306.6943982221.

The spelling of 28848121 in words is "twenty-eight million, eight hundred forty-eight thousand, one hundred twenty-one".