223504144 has 20 divisors (see below), whose sum is σ = 455831440. Its totient is φ = 105870240.

The previous prime is 223504139. The next prime is 223504147. The reversal of 223504144 is 441405322.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (223504147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367302 + ... + 367909.

It is an arithmetic number, because the mean of its divisors is an integer number (22791572).

Almost surely, 2^223504144 is an apocalyptic number.

It is an amenable number.

223504144 is an abundant number, since it is smaller than the sum of its proper divisors (232327296).

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

223504144 is a wasteful number, since it uses less digits than its factorization.

223504144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735238 (or 735232 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 223504144 is about 14950.0549831765. The cubic root of 223504144 is about 606.8693350701.

Adding to 223504144 its reverse (441405322), we get a palindrome (664909466).

The spelling of 223504144 in words is "two hundred twenty-three million, five hundred four thousand, one hundred forty-four".