1312224 has 24 divisors (see below), whose sum is σ = 3444840. Its totient is φ = 437376.

The previous prime is 1312211. The next prime is 1312229. The reversal of 1312224 is 4222131.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312229) 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, 6739 + ... + 6930.

It is an arithmetic number, because the mean of its divisors is an integer number (143535).

2^1312224 is an apocalyptic number.

It is an amenable number.

1312224 is an abundant number, since it is smaller than the sum of its proper divisors (2132616).

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

1312224 is a wasteful number, since it uses less digits than its factorization.

1312224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13682 (or 13674 counting only the distinct ones).

The product of its digits is 96, while the sum is 15.

The square root of 1312224 is about 1145.5234611303. The cubic root of 1312224 is about 109.4803033733.

Adding to 1312224 its reverse (4222131), we get a palindrome (5534355).

The spelling of 1312224 in words is "one million, three hundred twelve thousand, two hundred twenty-four".