220726 has 16 divisors (see below), whose sum is σ = 368640. Its totient is φ = 98280.

The previous prime is 220721. The next prime is 220747. The reversal of 220726 is 627022.

It is a happy number.

220726 is a modest number, since divided by 726 gives 22 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220721) 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 7 ways as a sum of consecutive naturals, for example, 1675 + ... + 1801.

It is an arithmetic number, because the mean of its divisors is an integer number (23040).

2²²⁰⁷²⁶ is an apocalyptic number.

220726 is a deficient number, since it is larger than the sum of its proper divisors (147914).

220726 is a wasteful number, since it uses less digits than its factorization.

220726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 220726 is about 469.8148571512. The cubic root of 220726 is about 60.4344393743.

Adding to 220726 its reverse (627022), we get a palindrome (847748).

It can be divided in two parts, 220 and 726, that added together give a triangular number (946 = T₄₃).

The spelling of 220726 in words is "two hundred twenty thousand, seven hundred twenty-six".