1172224 has 36 divisors (see below), whose sum is σ = 2473240. Its totient is φ = 552960.

The previous prime is 1172207. The next prime is 1172233. The reversal of 1172224 is 4222711.

It is a happy number.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

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, 4744 + ... + 4984.

2^1172224 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 1172224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236620).

1172224 is an abundant number, since it is smaller than the sum of its proper divisors (1301016).

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

1172224 is an equidigital number, since it uses as much as digits as its factorization.

1172224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 262 counting only the distinct ones).

The product of its digits is 224, while the sum is 19.

The square root of 1172224 is about 1082.6929389259. The cubic root of 1172224 is about 105.4395481861.

Adding to 1172224 its reverse (4222711), we get a palindrome (5394935).

It can be divided in two parts, 1 and 172224, that added together give a square (172225 = 415²).

The spelling of 1172224 in words is "one million, one hundred seventy-two thousand, two hundred twenty-four".