1216233 has 12 divisors (see below), whose sum is σ = 1766388. Its totient is φ = 806400.

The previous prime is 1216213. The next prime is 1216249. The reversal of 1216233 is 3326121.

It can be written as a sum of positive squares in 2 ways, for example, as 870489 + 345744 = 933^2 + 588^2 .

It is not a de Polignac number, because 1216233 - 2¹⁰ = 1215209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1216213) 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 in 11 ways as a sum of consecutive naturals, for example, 2833 + ... + 3233.

It is an arithmetic number, because the mean of its divisors is an integer number (147199).

2^1216233 is an apocalyptic number.

It is an amenable number.

1216233 is a deficient number, since it is larger than the sum of its proper divisors (550155).

1216233 is a wasteful number, since it uses less digits than its factorization.

1216233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 741 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 1216233 is about 1102.8295425858. The cubic root of 1216233 is about 106.7428828116.

The spelling of 1216233 in words is "one million, two hundred sixteen thousand, two hundred thirty-three".