2215422 has 48 divisors (see below), whose sum is σ = 5346432. Its totient is φ = 657360.

The previous prime is 2215417. The next prime is 2215463. The reversal of 2215422 is 2245122.

Added to its reverse (2245122) it gives a square (4460544 = 2112²).

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 2² + 2⁴ + 1 + 5⁹ + 4 + 2⁷ + 2¹⁸ .

It is a junction number, because it is equal to n+sod(n) for n = 2215395 and 2215404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13183 + ... + 13349.

It is an arithmetic number, because the mean of its divisors is an integer number (111384).

2^2215422 is an apocalyptic number.

2215422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2673216).

2215422 is an abundant number, since it is smaller than the sum of its proper divisors (3131010).

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

2215422 is a wasteful number, since it uses less digits than its factorization.

2215422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 250 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 2215422 is about 1488.4293735344. The cubic root of 2215422 is about 130.3623421815.

Adding to 2215422 its reverse (2245122), we get a square (4460544 = 2112²).

The spelling of 2215422 in words is "two million, two hundred fifteen thousand, four hundred twenty-two".