2118260 has 12 divisors (see below), whose sum is σ = 4448388. Its totient is φ = 847296.

The previous prime is 2118239. The next prime is 2118269. The reversal of 2118260 is 628112.

It can be written as a sum of positive squares in 2 ways, for example, as 1024144 + 1094116 = 1012^2 + 1046^2 .

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: 105913 = 2118260 / (2 + 1 + 1 + 8 + 2 + 6 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52937 + ... + 52976.

It is an arithmetic number, because the mean of its divisors is an integer number (370699).

2^2118260 is an apocalyptic number.

2118260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2118260 is an abundant number, since it is smaller than the sum of its proper divisors (2330128).

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

2118260 is a wasteful number, since it uses less digits than its factorization.

2118260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105922 (or 105920 counting only the distinct ones).

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

The square root of 2118260 is about 1455.4243367486. The cubic root of 2118260 is about 128.4280105685.

It can be divided in two parts, 21 and 18260, that added together give a palindrome (18281).

The spelling of 2118260 in words is "two million, one hundred eighteen thousand, two hundred sixty".