223423644 has 48 divisors (see below), whose sum is σ = 528143616. Its totient is φ = 73507200.

The previous prime is 223423631. The next prime is 223423667. The reversal of 223423644 is 446324322.

223423644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 488664 + ... + 489120.

It is an arithmetic number, because the mean of its divisors is an integer number (11002992).

Almost surely, 2^223423644 is an apocalyptic number.

It is an amenable number.

223423644 is an abundant number, since it is smaller than the sum of its proper divisors (304719972).

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

223423644 is a wasteful number, since it uses less digits than its factorization.

223423644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906 (or 904 counting only the distinct ones).

The product of its digits is 27648, while the sum is 30.

The square root of 223423644 is about 14947.3624429195. The cubic root of 223423644 is about 606.7964671478.

Adding to 223423644 its reverse (446324322), we get a palindrome (669747966).

It can be divided in two parts, 2234 and 23644, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 223423644 in words is "two hundred twenty-three million, four hundred twenty-three thousand, six hundred forty-four".