2168320 has 120 divisors (see below), whose sum is σ = 6530832. Its totient is φ = 675840.

The previous prime is 2168317. The next prime is 2168323. The reversal of 2168320 is 238612.

2168320 = T₁₄₁ + T₁₄₂ + ... + T₂₅₀.

2168320 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2168317) and next prime (2168323).

It is a super-2 number, since 2×2168320² = 9403223244800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2168291 and 2168300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197115 + ... + 197125.

2^2168320 is an apocalyptic number.

2168320 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 2168320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3265416).

2168320 is an abundant number, since it is smaller than the sum of its proper divisors (4362512).

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

2168320 is an equidigital number, since it uses as much as digits as its factorization.

2168320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2168320 is about 1472.5216467000. The cubic root of 2168320 is about 129.4318400229.

The spelling of 2168320 in words is "two million, one hundred sixty-eight thousand, three hundred twenty".