223134440 has 32 divisors (see below), whose sum is σ = 503572680. Its totient is φ = 88983552.

The previous prime is 223134421. The next prime is 223134451. The reversal of 223134440 is 44431322.

It can be written as a sum of positive squares in 4 ways, for example, as 204661636 + 18472804 = 14306^2 + 4298^2 .

It is a super-3 number, since 3×223134440³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 7 ways as a sum of consecutive naturals, for example, 5204 + ... + 21756.

Almost surely, 2^223134440 is an apocalyptic number.

223134440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223134440 is an abundant number, since it is smaller than the sum of its proper divisors (280438240).

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

223134440 is a wasteful number, since it uses less digits than its factorization.

223134440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16901 (or 16897 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 223134440 is about 14937.6852289771. The cubic root of 223134440 is about 606.5345376354.

Adding to 223134440 its reverse (44431322), we get a palindrome (267565762).

The spelling of 223134440 in words is "two hundred twenty-three million, one hundred thirty-four thousand, four hundred forty".