180012240 has 80 divisors (see below), whose sum is σ = 620049600. Its totient is φ = 48002688.

The previous prime is 180012229. The next prime is 180012241. The reversal of 180012240 is 42210081.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180012241) 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, 39510 + ... + 43829.

It is an arithmetic number, because the mean of its divisors is an integer number (7750620).

Almost surely, 2^180012240 is an apocalyptic number.

180012240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180012240 is an abundant number, since it is smaller than the sum of its proper divisors (440037360).

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

180012240 is a wasteful number, since it uses less digits than its factorization.

180012240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83361 (or 83349 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 180012240 is about 13416.8640151117. The cubic root of 180012240 is about 564.6344151285.

The spelling of 180012240 in words is "one hundred eighty million, twelve thousand, two hundred forty".