28052449 has 2 divisors, whose sum is σ = 28052450. Its totient is φ = 28052448.

The previous prime is 28052441. The next prime is 28052477. The reversal of 28052449 is 94425082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14861025 + 13191424 = 3855^2 + 3632^2 .

It is a cyclic number.

It is not a de Polignac number, because 28052449 - 2³ = 28052441 is a prime.

It is not a weakly prime, because it can be changed into another prime (28052441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14026224 + 14026225.

It is an arithmetic number, because the mean of its divisors is an integer number (14026225).

Almost surely, 2^28052449 is an apocalyptic number.

It is an amenable number.

28052449 is a deficient number, since it is larger than the sum of its proper divisors (1).

28052449 is an equidigital number, since it uses as much as digits as its factorization.

28052449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 28052449 is about 5296.4562681098. The cubic root of 28052449 is about 303.8483813706.

The spelling of 28052449 in words is "twenty-eight million, fifty-two thousand, four hundred forty-nine".