1223438 has 8 divisors (see below), whose sum is σ = 1852632. Its totient is φ = 605896.

The previous prime is 1223437. The next prime is 1223447. The reversal of 1223438 is 8343221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223437) 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, 2645 + ... + 3072.

It is an arithmetic number, because the mean of its divisors is an integer number (231579).

2^1223438 is an apocalyptic number.

1223438 is a deficient number, since it is larger than the sum of its proper divisors (629194).

1223438 is a wasteful number, since it uses less digits than its factorization.

1223438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5826.

The product of its digits is 1152, while the sum is 23.

The square root of 1223438 is about 1106.0913163026. The cubic root of 1223438 is about 106.9532506057.

Adding to 1223438 its reverse (8343221), we get a palindrome (9566659).

It can be divided in two parts, 1223 and 438, that added together give a palindrome (1661).

The spelling of 1223438 in words is "one million, two hundred twenty-three thousand, four hundred thirty-eight".