1228266 has 48 divisors (see below), whose sum is σ = 2981160. Its totient is φ = 362880.

The previous prime is 1228247. The next prime is 1228273. The reversal of 1228266 is 6628221.

It can be written as a sum of positive squares in 4 ways, for example, as 455625 + 772641 = 675^2 + 879^2 .

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 23 ways as a sum of consecutive naturals, for example, 6696 + ... + 6876.

2^1228266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490580).

1228266 is an abundant number, since it is smaller than the sum of its proper divisors (1752894).

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

1228266 is a wasteful number, since it uses less digits than its factorization.

1228266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 228 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 1228266 is about 1108.2716273550. The cubic root of 1228266 is about 107.0937542618.

The spelling of 1228266 in words is "one million, two hundred twenty-eight thousand, two hundred sixty-six".