28476449 has 6 divisors (see below), whose sum is σ = 29155986. Its totient is φ = 27812400.

The previous prime is 28476439. The next prime is 28476473. The reversal of 28476449 is 94467482.

It can be written as a sum of positive squares in only one way, i.e., 28430224 + 46225 = 5332^2 + 215^2 .

It is not a de Polignac number, because 28476449 - 2¹⁶ = 28410913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28476439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5852 + ... + 9549.

It is an arithmetic number, because the mean of its divisors is an integer number (4859331).

Almost surely, 2^28476449 is an apocalyptic number.

It is an amenable number.

28476449 is a deficient number, since it is larger than the sum of its proper divisors (679537).

28476449 is an equidigital number, since it uses as much as digits as its factorization.

28476449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15487 (or 15444 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 28476449 is about 5336.3329169009. The cubic root of 28476449 is about 305.3715761559.

The spelling of 28476449 in words is "twenty-eight million, four hundred seventy-six thousand, four hundred forty-nine".