180308 has 6 divisors (see below), whose sum is σ = 315546. Its totient is φ = 90152.

The previous prime is 180307. The next prime is 180311. The reversal of 180308 is 803081.

It can be written as a sum of positive squares in only one way, i.e., 158404 + 21904 = 398^2 + 148^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 180308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22535 + ... + 22542.

It is an arithmetic number, because the mean of its divisors is an integer number (52591).

2¹⁸⁰³⁰⁸ is an apocalyptic number.

It is an amenable number.

180308 is a deficient number, since it is larger than the sum of its proper divisors (135238).

180308 is a wasteful number, since it uses less digits than its factorization.

180308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45081 (or 45079 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 180308 is about 424.6268950502. The cubic root of 180308 is about 56.4943477260.

Adding to 180308 its reverse (803081), we get a palindrome (983389).

The spelling of 180308 in words is "one hundred eighty thousand, three hundred eight".