28864208 has 10 divisors (see below), whose sum is σ = 55924434. Its totient is φ = 14432096.

The previous prime is 28864207. The next prime is 28864217. The reversal of 28864208 is 80246882.

It can be written as a sum of positive squares in only one way, i.e., 20866624 + 7997584 = 4568^2 + 2828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28864201) 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, 901991 + ... + 902022.

Almost surely, 2^28864208 is an apocalyptic number.

It is an amenable number.

28864208 is a deficient number, since it is larger than the sum of its proper divisors (27060226).

28864208 is a wasteful number, since it uses less digits than its factorization.

28864208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804021 (or 1804015 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 28864208 is about 5372.5420426461. The cubic root of 28864208 is about 306.7513964574.

The spelling of 28864208 in words is "twenty-eight million, eight hundred sixty-four thousand, two hundred eight".