28005676 has 12 divisors (see below), whose sum is σ = 49153608. Its totient is φ = 13961792.

The previous prime is 28005667. The next prime is 28005683. The reversal of 28005676 is 67650082.

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 3 ways as a sum of consecutive naturals, for example, 8701 + ... + 11476.

It is an arithmetic number, because the mean of its divisors is an integer number (4096134).

Almost surely, 2^28005676 is an apocalyptic number.

It is an amenable number.

28005676 is a deficient number, since it is larger than the sum of its proper divisors (21147932).

28005676 is a wasteful number, since it uses less digits than its factorization.

28005676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20528 (or 20526 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 28005676 is about 5292.0389265386. The cubic root of 28005676 is about 303.6794144667.

The spelling of 28005676 in words is "twenty-eight million, five thousand, six hundred seventy-six".