1223420224 has 56 divisors (see below), whose sum is σ = 2658892320. Its totient is φ = 555062784.

The previous prime is 1223420183. The next prime is 1223420243. The reversal of 1223420224 is 4220243221.

It is a junction number, because it is equal to n+sod(n) for n = 1223420195 and 1223420204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36627 + ... + 61549.

It is an arithmetic number, because the mean of its divisors is an integer number (47480220).

Almost surely, 2^1223420224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223420224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329446160).

1223420224 is an abundant number, since it is smaller than the sum of its proper divisors (1435472096).

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

1223420224 is a wasteful number, since it uses less digits than its factorization.

1223420224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25007 (or 24997 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1223420224 is about 34977.4244906625. The cubic root of 1223420224 is about 1069.5273260912.

Adding to 1223420224 its reverse (4220243221), we get a palindrome (5443663445).

The spelling of 1223420224 in words is "one billion, two hundred twenty-three million, four hundred twenty thousand, two hundred twenty-four".