220345443 has 6 divisors (see below), whose sum is σ = 318276764. Its totient is φ = 146896956.

The previous prime is 220345423. The next prime is 220345453. The reversal of 220345443 is 344543022.

220345443 is a `hidden beast` number, since 2 + 203 + 454 + 4 + 3 = 666.

It is not a de Polignac number, because 220345443 - 2¹⁰ = 220344419 is a prime.

It is a super-2 number, since 2×220345443² = 97104228501732498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220345423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12241405 + ... + 12241422.

Almost surely, 2^220345443 is an apocalyptic number.

220345443 is a deficient number, since it is larger than the sum of its proper divisors (97931321).

220345443 is a wasteful number, since it uses less digits than its factorization.

220345443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24482833 (or 24482830 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 220345443 is about 14844.0372877462. The cubic root of 220345443 is about 603.9968742072.

Adding to 220345443 its reverse (344543022), we get a palindrome (564888465).

The spelling of 220345443 in words is "two hundred twenty million, three hundred forty-five thousand, four hundred forty-three".