2181080 has 32 divisors (see below), whose sum is σ = 5354640. Its totient is φ = 792960.

The previous prime is 2181079. The next prime is 2181097. The reversal of 2181080 is 801812.

2181080 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2039 + ... + 2918.

2^2181080 is an apocalyptic number.

2181080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2181080 is an abundant number, since it is smaller than the sum of its proper divisors (3173560).

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

2181080 is a wasteful number, since it uses less digits than its factorization.

2181080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979 (or 4975 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 2181080 is about 1476.8479948864. The cubic root of 2181080 is about 129.6852345373.

Adding to 2181080 its reverse (801812), we get a palindrome (2982892).

The spelling of 2181080 in words is "two million, one hundred eighty-one thousand, eighty".