2022720 has 168 divisors, whose sum is σ = 7644384. Its totient is φ = 451584.

The previous prime is 2022707. The next prime is 2022731. The reversal of 2022720 is 272202.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2022720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47019 + ... + 47061.

2^2022720 is an apocalyptic number.

2022720 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 2022720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3822192).

2022720 is an abundant number, since it is smaller than the sum of its proper divisors (5621664).

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

2022720 is a wasteful number, since it uses less digits than its factorization.

2022720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 2022720 is about 1422.2236111104. The cubic root of 2022720 is about 126.4673998284.

Adding to 2022720 its reverse (272202), we get a palindrome (2294922).

The spelling of 2022720 in words is "two million, twenty-two thousand, seven hundred twenty".