28608388 has 6 divisors (see below), whose sum is σ = 50064686. Its totient is φ = 14304192.

The previous prime is 28608379. The next prime is 28608403. The reversal of 28608388 is 88380682.

It can be written as a sum of positive squares in only one way, i.e., 25725184 + 2883204 = 5072^2 + 1698^2 .

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, 3576045 + ... + 3576052.

Almost surely, 2^28608388 is an apocalyptic number.

It is an amenable number.

28608388 is a deficient number, since it is larger than the sum of its proper divisors (21456298).

28608388 is a wasteful number, since it uses less digits than its factorization.

28608388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152101 (or 7152099 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 28608388 is about 5348.6809588907. The cubic root of 28608388 is about 305.8424723531.

The spelling of 28608388 in words is "twenty-eight million, six hundred eight thousand, three hundred eighty-eight".