1228347 has 6 divisors (see below), whose sum is σ = 1774292. Its totient is φ = 818892.

The previous prime is 1228333. The next prime is 1228351. The reversal of 1228347 is 7438221.

It is not a de Polignac number, because 1228347 - 2⁷ = 1228219 is a prime.

It is a d-powerful number, because it can be written as 1 + 2⁹ + 2¹¹ + 8³ + 3¹⁰ + 4¹⁰ + 7⁶ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1228347.

It is not an unprimeable number, because it can be changed into a prime (1228327) by changing a digit.

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, 68233 + ... + 68250.

2^1228347 is an apocalyptic number.

1228347 is a deficient number, since it is larger than the sum of its proper divisors (545945).

1228347 is a wasteful number, since it uses less digits than its factorization.

1228347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136489 (or 136486 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1228347 is about 1108.3081701404. The cubic root of 1228347 is about 107.0961083674.

The spelling of 1228347 in words is "one million, two hundred twenty-eight thousand, three hundred forty-seven".