28767266 has 12 divisors (see below), whose sum is σ = 47430726. Its totient is φ = 13075920.

The previous prime is 28767259. The next prime is 28767307. The reversal of 28767266 is 66276782.

It can be written as a sum of positive squares in only one way, i.e., 21855625 + 6911641 = 4675^2 + 2629^2 .

It is a super-2 number, since 2×28767266² = 1655111186229512, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 59195 + ... + 59678.

Almost surely, 2^28767266 is an apocalyptic number.

28767266 is a deficient number, since it is larger than the sum of its proper divisors (18663460).

28767266 is a wasteful number, since it uses less digits than its factorization.

28767266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118897 (or 118886 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 28767266 is about 5363.5124685228. The cubic root of 28767266 is about 306.4075975751.

The spelling of 28767266 in words is "twenty-eight million, seven hundred sixty-seven thousand, two hundred sixty-six".