180280217 has 8 divisors (see below), whose sum is σ = 194544000. Its totient is φ = 166073040.

The previous prime is 180280207. The next prime is 180280229. The reversal of 180280217 is 712082081.

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

It is a cyclic number.

It is not a de Polignac number, because 180280217 - 2¹² = 180276121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 180280217.

It is not an unprimeable number, because it can be changed into a prime (180280207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7409 + ... + 20382.

It is an arithmetic number, because the mean of its divisors is an integer number (24318000).

Almost surely, 2^180280217 is an apocalyptic number.

It is an amenable number.

180280217 is a deficient number, since it is larger than the sum of its proper divisors (14263783).

180280217 is a wasteful number, since it uses less digits than its factorization.

180280217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28303.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 180280217 is about 13426.8468748251. The cubic root of 180280217 is about 564.9144590784.

The spelling of 180280217 in words is "one hundred eighty million, two hundred eighty thousand, two hundred seventeen".