1216712 has 16 divisors (see below), whose sum is σ = 2607360. Its totient is φ = 521424.

The previous prime is 1216711. The next prime is 1216717. The reversal of 1216712 is 2176121.

It is not an unprimeable number, because it can be changed into a prime (1216711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10808 + ... + 10919.

It is an arithmetic number, because the mean of its divisors is an integer number (162960).

2^1216712 is an apocalyptic number.

It is an amenable number.

1216712 is an abundant number, since it is smaller than the sum of its proper divisors (1390648).

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

1216712 is a wasteful number, since it uses less digits than its factorization.

1216712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21740 (or 21736 counting only the distinct ones).

The product of its digits is 168, while the sum is 20.

The square root of 1216712 is about 1103.0466898550. The cubic root of 1216712 is about 106.7568941427.

It can be divided in two parts, 121671 and 2, that multiplied together give a palindrome (243342).

The spelling of 1216712 in words is "one million, two hundred sixteen thousand, seven hundred twelve".