1216944 has 60 divisors (see below), whose sum is σ = 3543176. Its totient is φ = 404352.

The previous prime is 1216939. The next prime is 1216951. The reversal of 1216944 is 4496121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3732 + ... + 4044.

2^1216944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1216944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771588).

1216944 is an abundant number, since it is smaller than the sum of its proper divisors (2326232).

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

1216944 is an equidigital number, since it uses as much as digits as its factorization.

1216944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 318 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1216944 is about 1103.1518481152. The cubic root of 1216944 is about 106.7636791024.

The spelling of 1216944 in words is "one million, two hundred sixteen thousand, nine hundred forty-four".