1772222 has 8 divisors (see below), whose sum is σ = 2667000. Its totient is φ = 883224.

The previous prime is 1772213. The next prime is 1772227. The reversal of 1772222 is 2222771.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1772227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572 + ... + 1967.

It is an arithmetic number, because the mean of its divisors is an integer number (333375).

2^1772222 is an apocalyptic number.

1772222 is a deficient number, since it is larger than the sum of its proper divisors (894778).

1772222 is a wasteful number, since it uses less digits than its factorization.

1772222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890.

The product of its digits is 784, while the sum is 23.

The square root of 1772222 is about 1331.2482863839. The cubic root of 1772222 is about 121.0150471918.

Adding to 1772222 its reverse (2222771), we get a palindrome (3994993).

The spelling of 1772222 in words is "one million, seven hundred seventy-two thousand, two hundred twenty-two".