226640243 has 8 divisors (see below), whose sum is σ = 244500768. Its totient is φ = 209282944.

The previous prime is 226640233. The next prime is 226640261. The reversal of 226640243 is 342046622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 226640243 - 2¹² = 226636147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226640203) 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, 124871 + ... + 126672.

It is an arithmetic number, because the mean of its divisors is an integer number (30562596).

Almost surely, 2^226640243 is an apocalyptic number.

226640243 is a deficient number, since it is larger than the sum of its proper divisors (17860525).

226640243 is a wasteful number, since it uses less digits than its factorization.

226640243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251613.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 226640243 is about 15054.5754838853. The cubic root of 226640243 is about 609.6945913610.

Adding to 226640243 its reverse (342046622), we get a palindrome (568686865).

The spelling of 226640243 in words is "two hundred twenty-six million, six hundred forty thousand, two hundred forty-three".