1223208 has 64 divisors (see below), whose sum is σ = 3888000. Its totient is φ = 349056.

The previous prime is 1223207. The next prime is 1223231. The reversal of 1223208 is 8023221.

It is a happy number.

It is a super-2 number, since 2×1223208² = 2992475622528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1223203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1108 + ... + 1916.

It is an arithmetic number, because the mean of its divisors is an integer number (60750).

2^1223208 is an apocalyptic number.

1223208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944000).

1223208 is an abundant number, since it is smaller than the sum of its proper divisors (2664792).

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

1223208 is a wasteful number, since it uses less digits than its factorization.

1223208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1223208 is about 1105.9873416997. The cubic root of 1223208 is about 106.9465479668.

Adding to 1223208 its reverse (8023221), we get a palindrome (9246429).

It can be divided in two parts, 1223 and 208, that added together give a triangular number (1431 = T₅₃).

The spelling of 1223208 in words is "one million, two hundred twenty-three thousand, two hundred eight".