180978876 has 72 divisors (see below), whose sum is σ = 518619920. Its totient is φ = 52752384.

The previous prime is 180978869. The next prime is 180978907. The reversal of 180978876 is 678879081.

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 23 ways as a sum of consecutive naturals, for example, 1285 + ... + 19068.

Almost surely, 2^180978876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180978876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259309960).

180978876 is an abundant number, since it is smaller than the sum of its proper divisors (337641044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180978876 is a wasteful number, since it uses less digits than its factorization.

180978876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20395 (or 20390 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The square root of 180978876 is about 13452.8389568894. The cubic root of 180978876 is about 565.6432759924.

The spelling of 180978876 in words is "one hundred eighty million, nine hundred seventy-eight thousand, eight hundred seventy-six".