1172216 has 8 divisors (see below), whose sum is σ = 2197920. Its totient is φ = 586104.

The previous prime is 1172207. The next prime is 1172233. The reversal of 1172216 is 6122711.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 73256 + ... + 73271.

It is an arithmetic number, because the mean of its divisors is an integer number (274740).

2^1172216 is an apocalyptic number.

It is an amenable number.

1172216 is a deficient number, since it is larger than the sum of its proper divisors (1025704).

1172216 is a wasteful number, since it uses less digits than its factorization.

1172216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146533 (or 146529 counting only the distinct ones).

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

The square root of 1172216 is about 1082.6892444280. The cubic root of 1172216 is about 105.4393083235.

Adding to 1172216 its reverse (6122711), we get a palindrome (7294927).

It can be divided in two parts, 11 and 72216, that added together give a palindrome (72227).

The spelling of 1172216 in words is "one million, one hundred seventy-two thousand, two hundred sixteen".