1223328 has 24 divisors (see below), whose sum is σ = 3211488. Its totient is φ = 407744.

The previous prime is 1223323. The next prime is 1223329. The reversal of 1223328 is 8233221.

1223328 is nontrivially palindromic in base 5.

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.

It is not an unprimeable number, because it can be changed into a prime (1223323) 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, 6276 + ... + 6467.

It is an arithmetic number, because the mean of its divisors is an integer number (133812).

2^1223328 is an apocalyptic number.

It is an amenable number.

1223328 is an abundant number, since it is smaller than the sum of its proper divisors (1988160).

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

1223328 is a wasteful number, since it uses less digits than its factorization.

1223328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12756 (or 12748 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1223328 is about 1106.0415905381. The cubic root of 1223328 is about 106.9500451006.

Adding to 1223328 its reverse (8233221), we get a palindrome (9456549).

It can be divided in two parts, 1223 and 328, that added together give a palindrome (1551).

The spelling of 1223328 in words is "one million, two hundred twenty-three thousand, three hundred twenty-eight".