28041666 has 16 divisors (see below), whose sum is σ = 58017600. Its totient is φ = 9024848.

The previous prime is 28041593. The next prime is 28041677. The reversal of 28041666 is 66614082.

It is a happy number.

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, 80406 + ... + 80753.

It is an arithmetic number, because the mean of its divisors is an integer number (3626100).

Almost surely, 2^28041666 is an apocalyptic number.

28041666 is an abundant number, since it is smaller than the sum of its proper divisors (29975934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28041666 is a wasteful number, since it uses less digits than its factorization.

28041666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161193.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 28041666 is about 5295.4382254918. The cubic root of 28041666 is about 303.8094445801.

The spelling of 28041666 in words is "twenty-eight million, forty-one thousand, six hundred sixty-six".