28948266 has 20 divisors (see below), whose sum is σ = 64865922. Its totient is φ = 9649368.

The previous prime is 28948247. The next prime is 28948273. The reversal of 28948266 is 66284982.

It can be written as a sum of positive squares in only one way, i.e., 18740241 + 10208025 = 4329^2 + 3195^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 89185 + ... + 89508.

Almost surely, 2^28948266 is an apocalyptic number.

28948266 is an abundant number, since it is smaller than the sum of its proper divisors (35917656).

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

28948266 is a wasteful number, since it uses less digits than its factorization.

28948266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178707 (or 178698 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 28948266 is about 5380.3592816837. The cubic root of 28948266 is about 307.0488804456.

The spelling of 28948266 in words is "twenty-eight million, nine hundred forty-eight thousand, two hundred sixty-six".