180388 has 12 divisors (see below), whose sum is σ = 340060. Its totient is φ = 83232.

The previous prime is 180379. The next prime is 180391. The reversal of 180388 is 883081.

180388 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 13924 + 166464 = 118^2 + 408^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683 + ... + 1786.

2¹⁸⁰³⁸⁸ is an apocalyptic number.

It is an amenable number.

180388 is a deficient number, since it is larger than the sum of its proper divisors (159672).

180388 is a wasteful number, since it uses less digits than its factorization.

180388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486 (or 3484 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 180388 is about 424.7210849487. The cubic root of 180388 is about 56.5027017269.

It can be divided in two parts, 1803 and 88, that added together give a triangular number (1891 = T₆₁).

The spelling of 180388 in words is "one hundred eighty thousand, three hundred eighty-eight".