220243345 has 32 divisors (see below), whose sum is σ = 319564800. Its totient is φ = 142347456.

The previous prime is 220243339. The next prime is 220243379. The reversal of 220243345 is 543342022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220243345 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150226 + ... + 151684.

It is an arithmetic number, because the mean of its divisors is an integer number (9986400).

Almost surely, 2^220243345 is an apocalyptic number.

It is an amenable number.

220243345 is a deficient number, since it is larger than the sum of its proper divisors (99321455).

220243345 is a wasteful number, since it uses less digits than its factorization.

220243345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 220243345 is about 14840.5978653153. The cubic root of 220243345 is about 603.9035716198.

Adding to 220243345 its reverse (543342022), we get a palindrome (763585367).

The spelling of 220243345 in words is "two hundred twenty million, two hundred forty-three thousand, three hundred forty-five".