180722 has 8 divisors (see below), whose sum is σ = 273900. Its totient is φ = 89424.

The previous prime is 180701. The next prime is 180731. The reversal of 180722 is 227081.

180722 is digitally balanced in base 2, 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 177241 + 3481 = 421^2 + 59^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 180694 and 180703.

It is an unprimeable number.

180722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197 + ... + 632.

2¹⁸⁰⁷²² is an apocalyptic number.

180722 is a deficient number, since it is larger than the sum of its proper divisors (93178).

180722 is a wasteful number, since it uses less digits than its factorization.

180722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 180722 is about 425.1141023302. The cubic root of 180722 is about 56.5375530230.

The spelling of 180722 in words is "one hundred eighty thousand, seven hundred twenty-two".