1223454144 has 56 divisors (see below), whose sum is σ = 3531339648. Its totient is φ = 370743040.

The previous prime is 1223454143. The next prime is 1223454187. The reversal of 1223454144 is 4414543221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223454143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287532 + ... + 291755.

Almost surely, 2^1223454144 is an apocalyptic number.

It is an amenable number.

1223454144 is an abundant number, since it is smaller than the sum of its proper divisors (2307885504).

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

1223454144 is a wasteful number, since it uses less digits than its factorization.

1223454144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579313 (or 579303 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 1223454144 is about 34977.9093714876. The cubic root of 1223454144 is about 1069.5372104114.

Adding to 1223454144 its reverse (4414543221), we get a palindrome (5637997365).

The spelling of 1223454144 in words is "one billion, two hundred twenty-three million, four hundred fifty-four thousand, one hundred forty-four".