180403404 has 48 divisors (see below), whose sum is σ = 453425280. Its totient is φ = 55641600.

The previous prime is 180403357. The next prime is 180403417. The reversal of 180403404 is 404304081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604 + ... + 19004.

It is an arithmetic number, because the mean of its divisors is an integer number (9446360).

Almost surely, 2^180403404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180403404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226712640).

180403404 is an abundant number, since it is smaller than the sum of its proper divisors (273021876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180403404 is a wasteful number, since it uses less digits than its factorization.

180403404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18470 (or 18468 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 180403404 is about 13431.4334305762. The cubic root of 180403404 is about 565.0431000614.

Adding to 180403404 its reverse (404304081), we get a palindrome (584707485).

The spelling of 180403404 in words is "one hundred eighty million, four hundred three thousand, four hundred four".