1802216 has 48 divisors (see below), whose sum is σ = 3864960. Its totient is φ = 786240.

The previous prime is 1802197. The next prime is 1802219. The reversal of 1802216 is 6122081.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1802219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41891 + ... + 41933.

It is an arithmetic number, because the mean of its divisors is an integer number (80520).

2^1802216 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 1802216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1932480).

1802216 is an abundant number, since it is smaller than the sum of its proper divisors (2062744).

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

1802216 is a wasteful number, since it uses less digits than its factorization.

1802216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1802216 is about 1342.4663869163. The cubic root of 1802216 is about 121.6939385499.

Adding to 1802216 its reverse (6122081), we get a palindrome (7924297).

The spelling of 1802216 in words is "one million, eight hundred two thousand, two hundred sixteen".