4512222 has 48 divisors (see below), whose sum is σ = 11492208. Its totient is φ = 1261440.

The previous prime is 4512217. The next prime is 4512223. The reversal of 4512222 is 2222154.

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

It is a junction number, because it is equal to n+sod(n) for n = 4512195 and 4512204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4512223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1698 + ... + 3450.

It is an arithmetic number, because the mean of its divisors is an integer number (239421).

Almost surely, 2^4512222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4512222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5746104).

4512222 is an abundant number, since it is smaller than the sum of its proper divisors (6979986).

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

4512222 is a wasteful number, since it uses less digits than its factorization.

4512222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1782 counting only the distinct ones).

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

The square root of 4512222 is about 2124.1991432067. The cubic root of 4512222 is about 165.2456945710.

Adding to 4512222 its reverse (2222154), we get a palindrome (6734376).

The spelling of 4512222 in words is "four million, five hundred twelve thousand, two hundred twenty-two".