2286216 has 48 divisors (see below), whose sum is σ = 6268860. Its totient is φ = 752640.

The previous prime is 2286203. The next prime is 2286233. The reversal of 2286216 is 6126822.

It can be written as a sum of positive squares in 2 ways, for example, as 2160900 + 125316 = 1470^2 + 354^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2286216.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7996 + ... + 8276.

2^2286216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2286216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3134430).

2286216 is an abundant number, since it is smaller than the sum of its proper divisors (3982644).

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

2286216 is a wasteful number, since it uses less digits than its factorization.

2286216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 399 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 2286216 is about 1512.0238093363. The cubic root of 2286216 is about 131.7363885039.

Subtracting 2286216 from its reverse (6126822), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 2286216 in words is "two million, two hundred eighty-six thousand, two hundred sixteen".