2216634 has 32 divisors (see below), whose sum is σ = 5132160. Its totient is φ = 625152.

The previous prime is 2216629. The next prime is 2216653. The reversal of 2216634 is 4366122.

2216634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2⁹ + 2²¹ + 1 + 6³ + 6⁶ + 3⁸ + 4⁸ .

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 3442 + ... + 4034.

It is an arithmetic number, because the mean of its divisors is an integer number (160380).

2^2216634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2216634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2566080).

2216634 is an abundant number, since it is smaller than the sum of its proper divisors (2915526).

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

2216634 is a wasteful number, since it uses less digits than its factorization.

2216634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694.

The product of its digits is 1728, while the sum is 24.

The square root of 2216634 is about 1488.8364584467. The cubic root of 2216634 is about 130.3861104681.

It can be divided in two parts, 2216 and 634, that added together give a triangular number (2850 = T₇₅).

The spelling of 2216634 in words is "two million, two hundred sixteen thousand, six hundred thirty-four".