180128308 has 12 divisors (see below), whose sum is σ = 315455140. Its totient is φ = 89998272.

The previous prime is 180128297. The next prime is 180128317. The reversal of 180128308 is 803821081.

It can be written as a sum of positive squares in 2 ways, for example, as 4088484 + 176039824 = 2022^2 + 13268^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 180128308.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 10041 + ... + 21472.

Almost surely, 2^180128308 is an apocalyptic number.

It is an amenable number.

180128308 is a deficient number, since it is larger than the sum of its proper divisors (135326832).

180128308 is a wasteful number, since it uses less digits than its factorization.

180128308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32946 (or 32944 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 180128308 is about 13421.1887700010. The cubic root of 180128308 is about 564.7557437429.

Adding to 180128308 its reverse (803821081), we get a palindrome (983949389).

The spelling of 180128308 in words is "one hundred eighty million, one hundred twenty-eight thousand, three hundred eight".