28808804 has 6 divisors (see below), whose sum is σ = 50415414. Its totient is φ = 14404400.

The previous prime is 28808779. The next prime is 28808867. The reversal of 28808804 is 40880882.

It can be written as a sum of positive squares in only one way, i.e., 21529600 + 7279204 = 4640^2 + 2698^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3601097 + ... + 3601104.

It is an arithmetic number, because the mean of its divisors is an integer number (8402569).

Almost surely, 2^28808804 is an apocalyptic number.

It is an amenable number.

28808804 is a deficient number, since it is larger than the sum of its proper divisors (21606610).

28808804 is a wasteful number, since it uses less digits than its factorization.

28808804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7202205 (or 7202203 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 28808804 is about 5367.3833475913. The cubic root of 28808804 is about 306.5550039801. Note that the first 3 decimals are identical.

The spelling of 28808804 in words is "twenty-eight million, eight hundred eight thousand, eight hundred four".