2182140 has 72 divisors (see below), whose sum is σ = 6879600. Its totient is φ = 580608.

The previous prime is 2182139. The next prime is 2182177. The reversal of 2182140 is 412812.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4636 + ... + 5084.

It is an arithmetic number, because the mean of its divisors is an integer number (95550).

2^2182140 is an apocalyptic number.

2182140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2182140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3439800).

2182140 is an abundant number, since it is smaller than the sum of its proper divisors (4697460).

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

2182140 is a wasteful number, since it uses less digits than its factorization.

2182140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2182140 is about 1477.2068237048. The cubic root of 2182140 is about 129.7062400461.

Adding to 2182140 its reverse (412812), we get a palindrome (2594952).

The spelling of 2182140 in words is "two million, one hundred eighty-two thousand, one hundred forty".