180028 has 6 divisors (see below), whose sum is σ = 315056. Its totient is φ = 90012.

The previous prime is 180023. The next prime is 180043. The reversal of 180028 is 820081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 179987 and 180014.

It is a congruent number.

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

180028 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, 22500 + ... + 22507.

2¹⁸⁰⁰²⁸ is an apocalyptic number.

It is an amenable number.

180028 is a deficient number, since it is larger than the sum of its proper divisors (135028).

180028 is a wasteful number, since it uses less digits than its factorization.

180028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45011 (or 45009 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 180028 is about 424.2970657452. The cubic root of 180028 is about 56.4650892487.

The spelling of 180028 in words is "one hundred eighty thousand, twenty-eight".