223440340 has 24 divisors (see below), whose sum is σ = 470302560. Its totient is φ = 89170848.

The previous prime is 223440319. The next prime is 223440379. The reversal of 223440340 is 43044322.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3750 + ... + 21469.

It is an arithmetic number, because the mean of its divisors is an integer number (19595940).

Almost surely, 2^223440340 is an apocalyptic number.

223440340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223440340 is an abundant number, since it is smaller than the sum of its proper divisors (246862220).

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

223440340 is a wasteful number, since it uses less digits than its factorization.

223440340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25671 (or 25669 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 223440340 is about 14947.9209256672. The cubic root of 223440340 is about 606.8115816649.

Adding to 223440340 its reverse (43044322), we get a palindrome (266484662).

The spelling of 223440340 in words is "two hundred twenty-three million, four hundred forty thousand, three hundred forty".