28580104 has 32 divisors (see below), whose sum is σ = 64468800. Its totient is φ = 11603520.

The previous prime is 28580063. The next prime is 28580113. The reversal of 28580104 is 40108582.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 12367 + ... + 14494.

It is an arithmetic number, because the mean of its divisors is an integer number (2014650).

Almost surely, 2^28580104 is an apocalyptic number.

It is an amenable number.

28580104 is an abundant number, since it is smaller than the sum of its proper divisors (35888696).

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

28580104 is a wasteful number, since it uses less digits than its factorization.

28580104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26893 (or 26889 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 28580104 is about 5346.0362886909. The cubic root of 28580104 is about 305.7416476015.

Adding to 28580104 its reverse (40108582), we get a palindrome (68688686).

The spelling of 28580104 in words is "twenty-eight million, five hundred eighty thousand, one hundred four".