223640230 has 16 divisors (see below), whose sum is σ = 439148304. Its totient is φ = 81323680.

The previous prime is 223640227. The next prime is 223640237. The reversal of 223640230 is 32046322.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223640237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1016437 + ... + 1016656.

It is an arithmetic number, because the mean of its divisors is an integer number (27446769).

Almost surely, 2^223640230 is an apocalyptic number.

223640230 is a deficient number, since it is larger than the sum of its proper divisors (215508074).

223640230 is a wasteful number, since it uses less digits than its factorization.

223640230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033111.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 223640230 is about 14954.6056450847. The cubic root of 223640230 is about 606.9924791916.

Adding to 223640230 its reverse (32046322), we get a palindrome (255686552).

The spelling of 223640230 in words is "two hundred twenty-three million, six hundred forty thousand, two hundred thirty".