28448529 has 16 divisors (see below), whose sum is σ = 40073280. Its totient is φ = 17902080.

The previous prime is 28448527. The next prime is 28448543. The reversal of 28448529 is 92584482.

It is not a de Polignac number, because 28448529 - 2¹ = 28448527 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28448521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18469 + ... + 19949.

It is an arithmetic number, because the mean of its divisors is an integer number (2504580).

Almost surely, 2^28448529 is an apocalyptic number.

It is an amenable number.

28448529 is a deficient number, since it is larger than the sum of its proper divisors (11624751).

28448529 is a wasteful number, since it uses less digits than its factorization.

28448529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840.

The product of its digits is 184320, while the sum is 42.

The square root of 28448529 is about 5333.7162466708. The cubic root of 28448529 is about 305.2717420511.

The spelling of 28448529 in words is "twenty-eight million, four hundred forty-eight thousand, five hundred twenty-nine".