2622620 has 96 divisors (see below), whose sum is σ = 7451136. Its totient is φ = 748800.

The previous prime is 2622619. The next prime is 2622623. The reversal of 2622620 is 262262.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2622592 and 2622601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2622623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19955 + ... + 20085.

It is an arithmetic number, because the mean of its divisors is an integer number (77616).

2^2622620 is an apocalyptic number.

2622620 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 2622620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3725568).

2622620 is an abundant number, since it is smaller than the sum of its proper divisors (4828516).

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

2622620 is a wasteful number, since it uses less digits than its factorization.

2622620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2622620 is about 1619.4505240976. The cubic root of 2622620 is about 137.9045058032.

2622620 divided by its sum of digits (20) gives a palindrome (131131).

Adding to 2622620 its reverse (262262), we get a palindrome (2884882).

It can be divided in two parts, 262 and 2620, that added together give a palindrome (2882).

The spelling of 2622620 in words is "two million, six hundred twenty-two thousand, six hundred twenty".