1173216 has 72 divisors (see below), whose sum is σ = 3418632. Its totient is φ = 352000.

The previous prime is 1173199. The next prime is 1173223. The reversal of 1173216 is 6123711.

It is a junction number, because it is equal to n+sod(n) for n = 1173192 and 1173201.

It is a congruent number.

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, 11566 + ... + 11666.

It is an arithmetic number, because the mean of its divisors is an integer number (47481).

2^1173216 is an apocalyptic number.

1173216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1173216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1709316).

1173216 is an abundant number, since it is smaller than the sum of its proper divisors (2245416).

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

1173216 is a wasteful number, since it uses less digits than its factorization.

1173216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 117 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 1173216 is about 1083.1509590080. The cubic root of 1173216 is about 105.4692827024.

Adding to 1173216 its reverse (6123711), we get a palindrome (7296927).

It can be divided in two parts, 117 and 3216, that added together give a palindrome (3333).

The spelling of 1173216 in words is "one million, one hundred seventy-three thousand, two hundred sixteen".