180507728 has 10 divisors (see below), whose sum is σ = 349733754. Its totient is φ = 90253856.

The previous prime is 180507721. The next prime is 180507731. The reversal of 180507728 is 827705081.

180507728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 110082064 + 70425664 = 10492^2 + 8392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 180507691 and 180507700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180507721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5640851 + ... + 5640882.

Almost surely, 2^180507728 is an apocalyptic number.

It is an amenable number.

180507728 is a deficient number, since it is larger than the sum of its proper divisors (169226026).

180507728 is a wasteful number, since it uses less digits than its factorization.

180507728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11281741 (or 11281735 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 180507728 is about 13435.3164458453. The cubic root of 180507728 is about 565.1519971146.

The spelling of 180507728 in words is "one hundred eighty million, five hundred seven thousand, seven hundred twenty-eight".