220442345 has 4 divisors (see below), whose sum is σ = 264530820. Its totient is φ = 176353872.

The previous prime is 220442329. The next prime is 220442347. The reversal of 220442345 is 543244022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126585001 + 93857344 = 11251^2 + 9688^2 .

It is a cyclic number.

It is not a de Polignac number, because 220442345 - 2⁴ = 220442329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220442347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22044230 + ... + 22044239.

It is an arithmetic number, because the mean of its divisors is an integer number (66132705).

Almost surely, 2^220442345 is an apocalyptic number.

It is an amenable number.

220442345 is a deficient number, since it is larger than the sum of its proper divisors (44088475).

220442345 is an equidigital number, since it uses as much as digits as its factorization.

220442345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44088474.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 220442345 is about 14847.3009331663. The cubic root of 220442345 is about 604.0854017584.

Adding to 220442345 its reverse (543244022), we get a palindrome (763686367).

It can be divided in two parts, 22044 and 2345, that added together give a cube (24389 = 29³).

The spelling of 220442345 in words is "two hundred twenty million, four hundred forty-two thousand, three hundred forty-five".