28080549 has 48 divisors (see below), whose sum is σ = 49690368. Its totient is φ = 14916096.

The previous prime is 28080527. The next prime is 28080551. The reversal of 28080549 is 94508082.

It is not a de Polignac number, because 28080549 - 2⁵ = 28080517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28080599) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168064 + ... + 168230.

It is an arithmetic number, because the mean of its divisors is an integer number (1035216).

Almost surely, 2^28080549 is an apocalyptic number.

It is an amenable number.

28080549 is a deficient number, since it is larger than the sum of its proper divisors (21609819).

28080549 is a wasteful number, since it uses less digits than its factorization.

28080549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28080549 is about 5299.1083212178. The cubic root of 28080549 is about 303.9498019897.

The spelling of 28080549 in words is "twenty-eight million, eighty thousand, five hundred forty-nine".