1220344 has 16 divisors (see below), whose sum is σ = 2311920. Its totient is φ = 603840.

The previous prime is 1220333. The next prime is 1220347. The reversal of 1220344 is 4430221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84 + ... + 1564.

It is an arithmetic number, because the mean of its divisors is an integer number (144495).

2^1220344 is an apocalyptic number.

It is an amenable number.

1220344 is a deficient number, since it is larger than the sum of its proper divisors (1091576).

1220344 is a wasteful number, since it uses less digits than its factorization.

1220344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1220344 is about 1104.6918122264. The cubic root of 1220344 is about 106.8630150828.

Adding to 1220344 its reverse (4430221), we get a palindrome (5650565).

The spelling of 1220344 in words is "one million, two hundred twenty thousand, three hundred forty-four".