180734728 has 32 divisors (see below), whose sum is σ = 351394200. Its totient is φ = 87044608.

The previous prime is 180734629. The next prime is 180734747. The reversal of 180734728 is 827437081.

It can be written as a sum of positive squares in 4 ways, for example, as 136936804 + 43797924 = 11702^2 + 6618^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150900 + ... + 152092.

Almost surely, 2^180734728 is an apocalyptic number.

It is an amenable number.

180734728 is a deficient number, since it is larger than the sum of its proper divisors (170659472).

180734728 is a wasteful number, since it uses less digits than its factorization.

180734728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 180734728 is about 13443.7616759596. The cubic root of 180734728 is about 565.3888027902.

It can be divided in two parts, 18073 and 4728, that added together give a square (22801 = 151²).

The spelling of 180734728 in words is "one hundred eighty million, seven hundred thirty-four thousand, seven hundred twenty-eight".