2123320 has 32 divisors (see below), whose sum is σ = 4831200. Its totient is φ = 839808.

The previous prime is 2123309. The next prime is 2123327. The reversal of 2123320 is 233212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2123320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4117 + ... + 4603.

It is an arithmetic number, because the mean of its divisors is an integer number (150975).

2^2123320 is an apocalyptic number.

2123320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123320 is an abundant number, since it is smaller than the sum of its proper divisors (2707880).

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

2123320 is a wasteful number, since it uses less digits than its factorization.

2123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 2123320 is about 1457.1616245290. The cubic root of 2123320 is about 128.5301901842.

Adding to 2123320 its reverse (233212), we get a palindrome (2356532).

The spelling of 2123320 in words is "two million, one hundred twenty-three thousand, three hundred twenty".