180670728 has 128 divisors (see below), whose sum is σ = 539320320. Its totient is φ = 49351680.

The previous prime is 180670717. The next prime is 180670729. The reversal of 180670728 is 827076081.

180670728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (180670729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 588351 + ... + 588657.

It is an arithmetic number, because the mean of its divisors is an integer number (4213440).

Almost surely, 2^180670728 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 180670728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269660160).

180670728 is an abundant number, since it is smaller than the sum of its proper divisors (358649592).

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

180670728 is a wasteful number, since it uses less digits than its factorization.

180670728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 180670728 is about 13441.3811790307. The cubic root of 180670728 is about 565.3220582751.

The spelling of 180670728 in words is "one hundred eighty million, six hundred seventy thousand, seven hundred twenty-eight".