220255642 has 16 divisors (see below), whose sum is σ = 334224072. Its totient is φ = 108855360.

The previous prime is 220255639. The next prime is 220255643. The reversal of 220255642 is 246552022.

It can be written as a sum of positive squares in 4 ways, for example, as 211440681 + 8814961 = 14541^2 + 2969^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220255642.

It is not an unprimeable number, because it can be changed into a prime (220255643) 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 7 ways as a sum of consecutive naturals, for example, 60868 + ... + 64384.

Almost surely, 2^220255642 is an apocalyptic number.

220255642 is a deficient number, since it is larger than the sum of its proper divisors (113968430).

220255642 is a wasteful number, since it uses less digits than its factorization.

220255642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 220255642 is about 14841.0121622482. The cubic root of 220255642 is about 603.9148108001.

The spelling of 220255642 in words is "two hundred twenty million, two hundred fifty-five thousand, six hundred forty-two".