28541504 has 56 divisors (see below), whose sum is σ = 61676280. Its totient is φ = 13049856.

The previous prime is 28541497. The next prime is 28541533. The reversal of 28541504 is 40514582.

It can be written as a sum of positive squares in 4 ways, for example, as 8111104 + 20430400 = 2848^2 + 4520^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39902 + ... + 40610.

Almost surely, 2^28541504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28541504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30838140).

28541504 is an abundant number, since it is smaller than the sum of its proper divisors (33134776).

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

28541504 is a wasteful number, since it uses less digits than its factorization.

28541504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 28541504 is about 5342.4249175819. The cubic root of 28541504 is about 305.6039417271.

The spelling of 28541504 in words is "twenty-eight million, five hundred forty-one thousand, five hundred four".