1266228 has 36 divisors (see below), whose sum is σ = 3390660. Its totient is φ = 397056.

The previous prime is 1266197. The next prime is 1266229. The reversal of 1266228 is 8226621.

It can be written as a sum of positive squares in 2 ways, for example, as 580644 + 685584 = 762^2 + 828^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (94185).

2^1266228 is an apocalyptic number.

1266228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1266228 is an abundant number, since it is smaller than the sum of its proper divisors (2124432).

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

1266228 is a wasteful number, since it uses less digits than its factorization.

1266228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096 (or 2091 counting only the distinct ones).

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

The square root of 1266228 is about 1125.2679680858. The cubic root of 1266228 is about 108.1858938404.

The spelling of 1266228 in words is "one million, two hundred sixty-six thousand, two hundred twenty-eight".