28449459 has 12 divisors (see below), whose sum is σ = 42880656. Its totient is φ = 18141552.

The previous prime is 28449439. The next prime is 28449497. The reversal of 28449459 is 95494482.

It is not a de Polignac number, because 28449459 - 2⁵ = 28449427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28449409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68512 + ... + 68925.

It is an arithmetic number, because the mean of its divisors is an integer number (3573388).

Almost surely, 2^28449459 is an apocalyptic number.

28449459 is a deficient number, since it is larger than the sum of its proper divisors (14431197).

28449459 is a wasteful number, since it uses less digits than its factorization.

28449459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137466 (or 137463 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 28449459 is about 5333.8034271990. The cubic root of 28449459 is about 305.2750685222.

The spelling of 28449459 in words is "twenty-eight million, four hundred forty-nine thousand, four hundred fifty-nine".