28448580 has 24 divisors (see below), whose sum is σ = 79656192. Its totient is φ = 7586272.

The previous prime is 28448579. The next prime is 28448587. The reversal of 28448580 is 8584482.

It is not an unprimeable number, because it can be changed into a prime (28448587) 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 7 ways as a sum of consecutive naturals, for example, 237012 + ... + 237131.

It is an arithmetic number, because the mean of its divisors is an integer number (3319008).

Almost surely, 2^28448580 is an apocalyptic number.

28448580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28448580 is an abundant number, since it is smaller than the sum of its proper divisors (51207612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28448580 is a wasteful number, since it uses less digits than its factorization.

28448580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474155 (or 474153 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 28448580 is about 5333.7210275754. The cubic root of 28448580 is about 305.2719244724.

The spelling of 28448580 in words is "twenty-eight million, four hundred forty-eight thousand, five hundred eighty".