28808704 has 20 divisors (see below), whose sum is σ = 57562164. Its totient is φ = 14404096.

The previous prime is 28808699. The next prime is 28808711. The reversal of 28808704 is 40780882.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 27622 + ... + 28645.

Almost surely, 2^28808704 is an apocalyptic number.

It is an amenable number.

28808704 is a deficient number, since it is larger than the sum of its proper divisors (28753460).

28808704 is an frugal number, since it uses more digits than its factorization.

28808704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56285 (or 56269 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 28808704 is about 5367.3740320570. The cubic root of 28808704 is about 306.5546492791.

The spelling of 28808704 in words is "twenty-eight million, eight hundred eight thousand, seven hundred four".