180200128 has 14 divisors (see below), whose sum is σ = 357584756. Its totient is φ = 90100032.

The previous prime is 180200099. The next prime is 180200129. The reversal of 180200128 is 821002081.

It is a super-2 number, since 2×180200128² = 64944172262432768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 180200099 and 180200108.

It is not an unprimeable number, because it can be changed into a prime (180200129) by changing a digit.

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 as a sum of consecutive naturals, namely, 1407750 + ... + 1407877.

Almost surely, 2^180200128 is an apocalyptic number.

It is an amenable number.

180200128 is a deficient number, since it is larger than the sum of its proper divisors (177384628).

180200128 is an equidigital number, since it uses as much as digits as its factorization.

180200128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815639 (or 2815629 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 180200128 is about 13423.8641232694. The cubic root of 180200128 is about 564.8307927796.

The spelling of 180200128 in words is "one hundred eighty million, two hundred thousand, one hundred twenty-eight".