223424540 has 24 divisors (see below), whose sum is σ = 496791792. Its totient is φ = 84112640.

The previous prime is 223424503. The next prime is 223424543. The reversal of 223424540 is 45424322.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223424543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328226 + ... + 328905.

It is an arithmetic number, because the mean of its divisors is an integer number (20699658).

Almost surely, 2^223424540 is an apocalyptic number.

223424540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223424540 is an abundant number, since it is smaller than the sum of its proper divisors (273367252).

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

223424540 is a wasteful number, since it uses less digits than its factorization.

223424540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657157 (or 657155 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 223424540 is about 14947.3924147324. The cubic root of 223424540 is about 606.7972782957.

Adding to 223424540 its reverse (45424322), we get a palindrome (268848862).

The spelling of 223424540 in words is "two hundred twenty-three million, four hundred twenty-four thousand, five hundred forty".