223440432 has 20 divisors (see below), whose sum is σ = 577221240. Its totient is φ = 74480128.

The previous prime is 223440431. The next prime is 223440439. The reversal of 223440432 is 234044322.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (223440431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2327457 + ... + 2327552.

It is an arithmetic number, because the mean of its divisors is an integer number (28861062).

Almost surely, 2^223440432 is an apocalyptic number.

It is an amenable number.

223440432 is an abundant number, since it is smaller than the sum of its proper divisors (353780808).

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

223440432 is a wasteful number, since it uses less digits than its factorization.

223440432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4655020 (or 4655014 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 223440432 is about 14947.9240030179. The cubic root of 223440432 is about 606.8116649483.

Adding to 223440432 its reverse (234044322), we get a palindrome (457484754).

The spelling of 223440432 in words is "two hundred twenty-three million, four hundred forty thousand, four hundred thirty-two".