220244346 has 80 divisors (see below), whose sum is σ = 566628480. Its totient is φ = 62635680.

The previous prime is 220244341. The next prime is 220244347. The reversal of 220244346 is 643442022.

220244346 is a `hidden beast` number, since 220 + 2 + 4 + 434 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220244341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 406836 + ... + 407376.

It is an arithmetic number, because the mean of its divisors is an integer number (7082856).

Almost surely, 2^220244346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220244346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283314240).

220244346 is an abundant number, since it is smaller than the sum of its proper divisors (346384134).

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

220244346 is a wasteful number, since it uses less digits than its factorization.

220244346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 220244346 is about 14840.6315903333. The cubic root of 220244346 is about 603.9044865268.

Adding to 220244346 its reverse (643442022), we get a palindrome (863686368).

The spelling of 220244346 in words is "two hundred twenty million, two hundred forty-four thousand, three hundred forty-six".