2181260 has 12 divisors (see below), whose sum is σ = 4580688. Its totient is φ = 872496.

The previous prime is 2181259. The next prime is 2181271. The reversal of 2181260 is 621812.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 109063 = 2181260 / (2 + 1 + 8 + 1 + 2 + 6 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54512 + ... + 54551.

It is an arithmetic number, because the mean of its divisors is an integer number (381724).

2^2181260 is an apocalyptic number.

2181260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2181260 is an abundant number, since it is smaller than the sum of its proper divisors (2399428).

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

2181260 is a wasteful number, since it uses less digits than its factorization.

2181260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109072 (or 109070 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2181260 is about 1476.9089342272. The cubic root of 2181260 is about 129.6888019901.

The spelling of 2181260 in words is "two million, one hundred eighty-one thousand, two hundred sixty".