1216936 has 32 divisors (see below), whose sum is σ = 2695680. Its totient is φ = 504000.

The previous prime is 1216913. The next prime is 1216937. The reversal of 1216936 is 6396121.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386 + ... + 2086.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2^1216936 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 1216936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347840).

1216936 is an abundant number, since it is smaller than the sum of its proper divisors (1478744).

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

1216936 is a wasteful number, since it uses less digits than its factorization.

1216936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 741 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 1216936 is about 1103.1482221352. The cubic root of 1216936 is about 106.7634451526.

The spelling of 1216936 in words is "one million, two hundred sixteen thousand, nine hundred thirty-six".