2622720 has 72 divisors (see below), whose sum is σ = 8388576. Its totient is φ = 698368.

The previous prime is 2622707. The next prime is 2622733. The reversal of 2622720 is 272262.

It is an interprime number because it is at equal distance from previous prime (2622707) and next prime (2622733).

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3499 + ... + 4181.

It is an arithmetic number, because the mean of its divisors is an integer number (116508).

2^2622720 is an apocalyptic number.

2622720 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 2622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4194288).

2622720 is an abundant number, since it is smaller than the sum of its proper divisors (5765856).

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

2622720 is an equidigital number, since it uses as much as digits as its factorization.

2622720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 2622720 is about 1619.4813984730. The cubic root of 2622720 is about 137.9062585384.

Adding to 2622720 its reverse (272262), we get a palindrome (2894982).

The spelling of 2622720 in words is "two million, six hundred twenty-two thousand, seven hundred twenty".