28992666 has 16 divisors (see below), whose sum is σ = 58262688. Its totient is φ = 9618000.

The previous prime is 28992631. The next prime is 28992671. The reversal of 28992666 is 66629982.

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, 10185 + ... + 12716.

It is an arithmetic number, because the mean of its divisors is an integer number (3641418).

Almost surely, 2^28992666 is an apocalyptic number.

28992666 is an abundant number, since it is smaller than the sum of its proper divisors (29270022).

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

28992666 is a wasteful number, since it uses less digits than its factorization.

28992666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23117.

The product of its digits is 559872, while the sum is 48.

The square root of 28992666 is about 5384.4838192718. The cubic root of 28992666 is about 307.2057811073.

It can be divided in two parts, 2899 and 2666, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 28992666 in words is "twenty-eight million, nine hundred ninety-two thousand, six hundred sixty-six".