1223356 has 6 divisors (see below), whose sum is σ = 2140880. Its totient is φ = 611676.

The previous prime is 1223351. The next prime is 1223357. The reversal of 1223356 is 6533221.

It is a plaindrome in base 10 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152916 + ... + 152923.

2^1223356 is an apocalyptic number.

It is an amenable number.

1223356 is a deficient number, since it is larger than the sum of its proper divisors (917524).

1223356 is a wasteful number, since it uses less digits than its factorization.

1223356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305843 (or 305841 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 1223356 is about 1106.0542482175. The cubic root of 1223356 is about 106.9508610656.

Adding to 1223356 its reverse (6533221), we get a palindrome (7756577).

The spelling of 1223356 in words is "one million, two hundred twenty-three thousand, three hundred fifty-six".