220061320 has 16 divisors (see below), whose sum is σ = 495138060. Its totient is φ = 88024512.

The previous prime is 220061297. The next prime is 220061329. The reversal of 220061320 is 23160022.

It can be written as a sum of positive squares in 2 ways, for example, as 218271076 + 1790244 = 14774^2 + 1338^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220061294 and 220061303.

It is not an unprimeable number, because it can be changed into a prime (220061329) 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, 2750727 + ... + 2750806.

Almost surely, 2^220061320 is an apocalyptic number.

220061320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220061320 is an abundant number, since it is smaller than the sum of its proper divisors (275076740).

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

220061320 is a wasteful number, since it uses less digits than its factorization.

220061320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501544 (or 5501540 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 220061320 is about 14834.4639269506. The cubic root of 220061320 is about 603.7371559293.

The spelling of 220061320 in words is "two hundred twenty million, sixty-one thousand, three hundred twenty".