28062868 has 6 divisors (see below), whose sum is σ = 49110026. Its totient is φ = 14031432.

The previous prime is 28062851. The next prime is 28062899. The reversal of 28062868 is 86826082.

It can be written as a sum of positive squares in only one way, i.e., 18215824 + 9847044 = 4268^2 + 3138^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28062868.

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, 3507855 + ... + 3507862.

Almost surely, 2^28062868 is an apocalyptic number.

It is an amenable number.

28062868 is a deficient number, since it is larger than the sum of its proper divisors (21047158).

28062868 is a wasteful number, since it uses less digits than its factorization.

28062868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7015721 (or 7015719 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 28062868 is about 5297.4397589779. The cubic root of 28062868 is about 303.8859943009.

The spelling of 28062868 in words is "twenty-eight million, sixty-two thousand, eight hundred sixty-eight".