2622240 has 96 divisors (see below), whose sum is σ = 9192960. Its totient is φ = 698112.

The previous prime is 2622229. The next prime is 2622241. The reversal of 2622240 is 422262.

It is a happy number.

2622240 is a `hidden beast` number, since 2 + 622 + 2 + 40 = 666.

2622240 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×2622240² = 13752285235200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 2³ + 6³ + 2⁹ + 2¹⁹ + 2²¹ + 4³ + 0 .

It is not an unprimeable number, because it can be changed into a prime (2622241) 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 15 ways as a sum of consecutive naturals, for example, 4017 + ... + 4623.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^2622240 is an apocalyptic number.

2622240 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 2622240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4596480).

2622240 is an abundant number, since it is smaller than the sum of its proper divisors (6570720).

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

2622240 is a wasteful number, since it uses less digits than its factorization.

2622240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2622240 is about 1619.3331961026. Note that the first 3 decimals coincide. The cubic root of 2622240 is about 137.8978450030.

It can be divided in two parts, 26222 and 40, that added together give a palindrome (26262).

The spelling of 2622240 in words is "two million, six hundred twenty-two thousand, two hundred forty".