180942240 has 48 divisors (see below), whose sum is σ = 569969568. Its totient is φ = 48251136.

The previous prime is 180942239. The next prime is 180942269. The reversal of 180942240 is 42249081.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 180942198 and 180942207.

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 7 ways as a sum of consecutive naturals, for example, 188002 + ... + 188961.

It is an arithmetic number, because the mean of its divisors is an integer number (11874366).

Almost surely, 2^180942240 is an apocalyptic number.

180942240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180942240 is an abundant number, since it is smaller than the sum of its proper divisors (389027328).

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

180942240 is a wasteful number, since it uses less digits than its factorization.

180942240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376981 (or 376973 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 180942240 is about 13451.4772422957. The cubic root of 180942240 is about 565.6051052290.

The spelling of 180942240 in words is "one hundred eighty million, nine hundred forty-two thousand, two hundred forty".