28277226 has 12 divisors (see below), whose sum is σ = 61267362. Its totient is φ = 9425736.

The previous prime is 28277209. The next prime is 28277231. The reversal of 28277226 is 62277282.

It can be written as a sum of positive squares in only one way, i.e., 19580625 + 8696601 = 4425^2 + 2949^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 785461 + ... + 785496.

Almost surely, 2^28277226 is an apocalyptic number.

28277226 is an abundant number, since it is smaller than the sum of its proper divisors (32990136).

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

28277226 is a wasteful number, since it uses less digits than its factorization.

28277226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570965 (or 1570962 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 28277226 is about 5317.6334962086. The cubic root of 28277226 is about 304.6577761457.

The spelling of 28277226 in words is "twenty-eight million, two hundred seventy-seven thousand, two hundred twenty-six".