180542740 has 48 divisors (see below), whose sum is σ = 435181824. Its totient is φ = 61632000.

The previous prime is 180542711. The next prime is 180542741. The reversal of 180542740 is 47245081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180542741) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 31065 + ... + 36415.

It is an arithmetic number, because the mean of its divisors is an integer number (9066288).

Almost surely, 2^180542740 is an apocalyptic number.

180542740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180542740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217590912).

180542740 is an abundant number, since it is smaller than the sum of its proper divisors (254639084).

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

180542740 is a wasteful number, since it uses less digits than its factorization.

180542740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5608 (or 5606 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 180542740 is about 13436.6193664925. The cubic root of 180542740 is about 565.1885344654.

The spelling of 180542740 in words is "one hundred eighty million, five hundred forty-two thousand, seven hundred forty".