1216336 has 20 divisors (see below), whose sum is σ = 2571264. Its totient is φ = 552800.

The previous prime is 1216277. The next prime is 1216337. The reversal of 1216336 is 6336121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3280 + ... + 3631.

2^1216336 is an apocalyptic number.

1216336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1216336 is an abundant number, since it is smaller than the sum of its proper divisors (1354928).

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

1216336 is a wasteful number, since it uses less digits than its factorization.

1216336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6930 (or 6924 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 1216336 is about 1102.8762396570. The cubic root of 1216336 is about 106.7458959970.

The spelling of 1216336 in words is "one million, two hundred sixteen thousand, three hundred thirty-six".