223420144 has 10 divisors (see below), whose sum is σ = 432876560. Its totient is φ = 111710064.

The previous prime is 223420139. The next prime is 223420151. The reversal of 223420144 is 441024322.

It is a happy number.

223420144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6981864 + ... + 6981895.

It is an arithmetic number, because the mean of its divisors is an integer number (43287656).

Almost surely, 2^223420144 is an apocalyptic number.

It is an amenable number.

223420144 is a deficient number, since it is larger than the sum of its proper divisors (209456416).

223420144 is a wasteful number, since it uses less digits than its factorization.

223420144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13963767 (or 13963761 counting only the distinct ones).

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

The square root of 223420144 is about 14947.2453649494. The cubic root of 223420144 is about 606.7932985802.

Adding to 223420144 its reverse (441024322), we get a palindrome (664444466).

The spelling of 223420144 in words is "two hundred twenty-three million, four hundred twenty thousand, one hundred forty-four".