220345620 has 48 divisors (see below), whose sum is σ = 673057728. Its totient is φ = 53416960.

The previous prime is 220345583. The next prime is 220345627. The reversal of 220345620 is 26543022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220345627) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 166269 + ... + 167588.

It is an arithmetic number, because the mean of its divisors is an integer number (14022036).

Almost surely, 2^220345620 is an apocalyptic number.

220345620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220345620 is an abundant number, since it is smaller than the sum of its proper divisors (452712108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220345620 is a wasteful number, since it uses less digits than its factorization.

220345620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333880 (or 333878 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 220345620 is about 14844.0432497349. The cubic root of 220345620 is about 603.9970359342.

Adding to 220345620 its reverse (26543022), we get a palindrome (246888642).

The spelling of 220345620 in words is "two hundred twenty million, three hundred forty-five thousand, six hundred twenty".