180988 has 6 divisors (see below), whose sum is σ = 316736. Its totient is φ = 90492.

The previous prime is 180959. The next prime is 181001. The reversal of 180988 is 889081.

It is a super-2 number, since 2×180988² = 65513312288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

180988 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22620 + ... + 22627.

2¹⁸⁰⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

180988 is a deficient number, since it is larger than the sum of its proper divisors (135748).

180988 is a wasteful number, since it uses less digits than its factorization.

180988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45251 (or 45249 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 180988 is about 425.4268444751. The cubic root of 180988 is about 56.5652781416.

The spelling of 180988 in words is "one hundred eighty thousand, nine hundred eighty-eight".