223630456 has 64 divisors (see below), whose sum is σ = 512121600. Its totient is φ = 89413632.

The previous prime is 223630439. The next prime is 223630457. The reversal of 223630456 is 654036322.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223630457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69720 + ... + 72856.

It is an arithmetic number, because the mean of its divisors is an integer number (8001900).

Almost surely, 2^223630456 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 223630456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256060800).

223630456 is an abundant number, since it is smaller than the sum of its proper divisors (288491144).

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

223630456 is a wasteful number, since it uses less digits than its factorization.

223630456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236 (or 3232 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 223630456 is about 14954.2788525559. The cubic root of 223630456 is about 606.9836363716.

Adding to 223630456 its reverse (654036322), we get a palindrome (877666778).

The spelling of 223630456 in words is "two hundred twenty-three million, six hundred thirty thousand, four hundred fifty-six".