28383866 has 16 divisors (see below), whose sum is σ = 50336640. Its totient is φ = 11744880.

The previous prime is 28383857. The next prime is 28383871. The reversal of 28383866 is 66838382.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 34550 + ... + 35361.

It is an arithmetic number, because the mean of its divisors is an integer number (3146040).

Almost surely, 2^28383866 is an apocalyptic number.

28383866 is a deficient number, since it is larger than the sum of its proper divisors (21952774).

28383866 is a wasteful number, since it uses less digits than its factorization.

28383866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69949.

The product of its digits is 331776, while the sum is 44.

The square root of 28383866 is about 5327.6510771634. The cubic root of 28383866 is about 305.0402741765.

The spelling of 28383866 in words is "twenty-eight million, three hundred eighty-three thousand, eight hundred sixty-six".