180306404 has 12 divisors (see below), whose sum is σ = 315673344. Its totient is φ = 90114024.

The previous prime is 180306391. The next prime is 180306421. The reversal of 180306404 is 404603081.

It is a super-2 number, since 2×180306404² = 65020798646822432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2189 + ... + 19115.

It is an arithmetic number, because the mean of its divisors is an integer number (26306112).

Almost surely, 2^180306404 is an apocalyptic number.

It is an amenable number.

180306404 is a deficient number, since it is larger than the sum of its proper divisors (135366940).

180306404 is a wasteful number, since it uses less digits than its factorization.

180306404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19594 (or 19592 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 180306404 is about 13427.8220125231. The cubic root of 180306404 is about 564.9418103854.

Adding to 180306404 its reverse (404603081), we get a palindrome (584909485).

The spelling of 180306404 in words is "one hundred eighty million, three hundred six thousand, four hundred four".