28767908 has 12 divisors (see below), whose sum is σ = 54216540. Its totient is φ = 13277472.

The previous prime is 28767839. The next prime is 28767911. The reversal of 28767908 is 80976782.

It can be written as a sum of positive squares in 2 ways, for example, as 7441984 + 21325924 = 2728^2 + 4618^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276563 + ... + 276666.

It is an arithmetic number, because the mean of its divisors is an integer number (4518045).

Almost surely, 2^28767908 is an apocalyptic number.

It is an amenable number.

28767908 is a deficient number, since it is larger than the sum of its proper divisors (25448632).

28767908 is a wasteful number, since it uses less digits than its factorization.

28767908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553246 (or 553244 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 28767908 is about 5363.5723170290. The cubic root of 28767908 is about 306.4098769276.

The spelling of 28767908 in words is "twenty-eight million, seven hundred sixty-seven thousand, nine hundred eight".