220147744 has 24 divisors (see below), whose sum is σ = 434665980. Its totient is φ = 109756416.

The previous prime is 220147723. The next prime is 220147747. The reversal of 220147744 is 447741022.

220147744 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 190771344 + 29376400 = 13812^2 + 5420^2 .

It is not an unprimeable number, because it can be changed into a prime (220147747) 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 3 ways as a sum of consecutive naturals, for example, 1552 + ... + 21040.

Almost surely, 2^220147744 is an apocalyptic number.

It is an amenable number.

220147744 is a deficient number, since it is larger than the sum of its proper divisors (214518236).

220147744 is a wasteful number, since it uses less digits than its factorization.

220147744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19852 (or 19844 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 220147744 is about 14837.3765875238. The cubic root of 220147744 is about 603.8161801924.

Adding to 220147744 its reverse (447741022), we get a palindrome (667888766).

The spelling of 220147744 in words is "two hundred twenty million, one hundred forty-seven thousand, seven hundred forty-four".