180400328 has 32 divisors (see below), whose sum is σ = 366894360. Its totient is φ = 82821120.

The previous prime is 180400327. The next prime is 180400343. The reversal of 180400328 is 823004081.

It can be written as a sum of positive squares in 4 ways, for example, as 163277284 + 17123044 = 12778^2 + 4138^2 .

It is a junction number, because it is equal to n+sod(n) for n = 180400297 and 180400306.

It is not an unprimeable number, because it can be changed into a prime (180400321) 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, 10601 + ... + 21752.

Almost surely, 2^180400328 is an apocalyptic number.

It is an amenable number.

180400328 is an abundant number, since it is smaller than the sum of its proper divisors (186494032).

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

180400328 is a wasteful number, since it uses less digits than its factorization.

180400328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32417 (or 32413 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 180400328 is about 13431.3189225779. The cubic root of 180400328 is about 565.0398885875.

The spelling of 180400328 in words is "one hundred eighty million, four hundred thousand, three hundred twenty-eight".