180716240 has 20 divisors (see below), whose sum is σ = 420165444. Its totient is φ = 72286464.

The previous prime is 180716209. The next prime is 180716243. The reversal of 180716240 is 42617081.

It can be written as a sum of positive squares in 2 ways, for example, as 40246336 + 140469904 = 6344^2 + 11852^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180716243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129397 + ... + 1129556.

Almost surely, 2^180716240 is an apocalyptic number.

180716240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180716240 is an abundant number, since it is smaller than the sum of its proper divisors (239449204).

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

180716240 is a wasteful number, since it uses less digits than its factorization.

180716240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258966 (or 2258960 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 180716240 is about 13443.0740532067. The cubic root of 180716240 is about 565.3695235870.

The spelling of 180716240 in words is "one hundred eighty million, seven hundred sixteen thousand, two hundred forty".