2180046240 has 72 divisors (see below), whose sum is σ = 7439412708. Its totient is φ = 581345280.

The previous prime is 2180046227. The next prime is 2180046241. The reversal of 2180046240 is 426400812.

It can be written as a sum of positive squares in 2 ways, for example, as 1803531024 + 376515216 = 42468^2 + 19404^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (2180046241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 755521 + ... + 758400.

Almost surely, 2^2180046240 is an apocalyptic number.

2180046240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2180046240 is an abundant number, since it is smaller than the sum of its proper divisors (5259366468).

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

2180046240 is a wasteful number, since it uses less digits than its factorization.

2180046240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513942 (or 1513931 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 2180046240 is about 46690.9652930843. The cubic root of 2180046240 is about 1296.6474245780.

The spelling of 2180046240 in words is "two billion, one hundred eighty million, forty-six thousand, two hundred forty".