2215626 has 32 divisors (see below), whose sum is σ = 5142528. Its totient is φ = 623280.

The previous prime is 2215583. The next prime is 2215639. The reversal of 2215626 is 6265122.

2215626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2215596 and 2215605.

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 15 ways as a sum of consecutive naturals, for example, 2611 + ... + 3353.

It is an arithmetic number, because the mean of its divisors is an integer number (160704).

2^2215626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2571264).

2215626 is an abundant number, since it is smaller than the sum of its proper divisors (2926902).

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

2215626 is a wasteful number, since it uses less digits than its factorization.

2215626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its digits is 1440, while the sum is 24.

The square root of 2215626 is about 1488.4979005696. The cubic root of 2215626 is about 130.3663433909.

The spelling of 2215626 in words is "two million, two hundred fifteen thousand, six hundred twenty-six".