180022 has 4 divisors (see below), whose sum is σ = 270036. Its totient is φ = 90010.

The previous prime is 180007. The next prime is 180023. The reversal of 180022 is 220081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220081 = 29 ⋅7589.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

180022 is a modest number, since divided by 22 gives 18 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 179984 and 180011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180023) by changing a digit.

180022 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 as a sum of consecutive naturals, namely, 45004 + ... + 45007.

It is an arithmetic number, because the mean of its divisors is an integer number (67509).

2¹⁸⁰⁰²² is an apocalyptic number.

180022 is a deficient number, since it is larger than the sum of its proper divisors (90014).

180022 is an equidigital number, since it uses as much as digits as its factorization.

180022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90013.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 180022 is about 424.2899951684. The cubic root of 180022 is about 56.4644619494.

The spelling of 180022 in words is "one hundred eighty thousand, twenty-two".