2123380 has 48 divisors (see below), whose sum is σ = 5281920. Its totient is φ = 701568.

The previous prime is 2123377. The next prime is 2123411. The reversal of 2123380 is 833212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3799 + ... + 4321.

It is an arithmetic number, because the mean of its divisors is an integer number (110040).

2^2123380 is an apocalyptic number.

2123380 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 2123380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2640960).

2123380 is an abundant number, since it is smaller than the sum of its proper divisors (3158540).

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

2123380 is a wasteful number, since it uses less digits than its factorization.

2123380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2123380 is about 1457.1822123537. The cubic root of 2123380 is about 128.5314008259.

Adding to 2123380 its reverse (833212), we get a palindrome (2956592).

The spelling of 2123380 in words is "two million, one hundred twenty-three thousand, three hundred eighty".