1422216 has 24 divisors (see below), whose sum is σ = 3852030. Its totient is φ = 474048.

The previous prime is 1422199. The next prime is 1422221. The reversal of 1422216 is 6122241.

It can be written as a sum of positive squares in only one way, i.e., 1313316 + 108900 = 1146^2 + 330^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9805 + ... + 9948.

2^1422216 is an apocalyptic number.

It is an amenable number.

1422216 is an abundant number, since it is smaller than the sum of its proper divisors (2429814).

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

1422216 is a wasteful number, since it uses less digits than its factorization.

1422216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19765 (or 19758 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1422216 is about 1192.5669792511. The cubic root of 1422216 is about 112.4575247059.

Adding to 1422216 its reverse (6122241), we get a palindrome (7544457).

The spelling of 1422216 in words is "one million, four hundred twenty-two thousand, two hundred sixteen".