28448485 has 16 divisors (see below), whose sum is σ = 36877680. Its totient is φ = 20943360.

The previous prime is 28448477. The next prime is 28448503. The reversal of 28448485 is 58484482.

It can be written as a sum of positive squares in 8 ways, for example, as 294849 + 28153636 = 543^2 + 5306^2 .

It is not a de Polignac number, because 28448485 - 2³ = 28448477 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 34761 + ... + 35569.

It is an arithmetic number, because the mean of its divisors is an integer number (2304855).

Almost surely, 2^28448485 is an apocalyptic number.

It is an amenable number.

28448485 is a deficient number, since it is larger than the sum of its proper divisors (8429195).

28448485 is a wasteful number, since it uses less digits than its factorization.

28448485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368.

The product of its digits is 327680, while the sum is 43.

The square root of 28448485 is about 5333.7121219653. The cubic root of 28448485 is about 305.2715846679.

The spelling of 28448485 in words is "twenty-eight million, four hundred forty-eight thousand, four hundred eighty-five".