220261306 has 8 divisors (see below), whose sum is σ = 331178004. Its totient is φ = 109868640.

The previous prime is 220261303. The next prime is 220261309. The reversal of 220261306 is 603162022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (220261303) and next prime (220261309).

It can be written as a sum of positive squares in 2 ways, for example, as 192793225 + 27468081 = 13885^2 + 5241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (220261303) 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, 129955 + ... + 131638.

Almost surely, 2^220261306 is an apocalyptic number.

220261306 is a deficient number, since it is larger than the sum of its proper divisors (110916698).

220261306 is a wasteful number, since it uses less digits than its factorization.

220261306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262016.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 220261306 is about 14841.2029835859. The cubic root of 220261306 is about 603.9199874275.

It can be divided in two parts, 22026 and 1306, that added together give a palindrome (23332).

The spelling of 220261306 in words is "two hundred twenty million, two hundred sixty-one thousand, three hundred six".