28608886 has 4 divisors (see below), whose sum is σ = 42913332. Its totient is φ = 14304442.

The previous prime is 28608883. The next prime is 28608917. The reversal of 28608886 is 68880682.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28608883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7152220 + ... + 7152223.

It is an arithmetic number, because the mean of its divisors is an integer number (10728333).

Almost surely, 2^28608886 is an apocalyptic number.

28608886 is a deficient number, since it is larger than the sum of its proper divisors (14304446).

28608886 is a wasteful number, since it uses less digits than its factorization.

28608886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14304445.

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 28608886 is about 5348.7275122219. The cubic root of 28608886 is about 305.8442469920.

The spelling of 28608886 in words is "twenty-eight million, six hundred eight thousand, eight hundred eighty-six".