28052266 has 16 divisors (see below), whose sum is σ = 46422720. Its totient is φ = 12606880.

The previous prime is 28052231. The next prime is 28052267. The reversal of 28052266 is 66225082.

It is not an unprimeable number, because it can be changed into a prime (28052267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5206 + ... + 9121.

It is an arithmetic number, because the mean of its divisors is an integer number (2901420).

Almost surely, 2^28052266 is an apocalyptic number.

28052266 is a deficient number, since it is larger than the sum of its proper divisors (18370454).

28052266 is a wasteful number, since it uses less digits than its factorization.

28052266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14429.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 28052266 is about 5296.4389923797. The cubic root of 28052266 is about 303.8477206514.

The spelling of 28052266 in words is "twenty-eight million, fifty-two thousand, two hundred sixty-six".