1722022 has 8 divisors (see below), whose sum is σ = 2595096. Its totient is φ = 856992.

The previous prime is 1722013. The next prime is 1722029. The reversal of 1722022 is 2202271.

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

It is a junction number, because it is equal to n+sod(n) for n = 1721987 and 1722005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722029) 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, 1443 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (324387).

2^1722022 is an apocalyptic number.

1722022 is a deficient number, since it is larger than the sum of its proper divisors (873074).

1722022 is a wasteful number, since it uses less digits than its factorization.

1722022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1722022 is about 1312.2583587084. The cubic root of 1722022 is about 119.8614604886.

Adding to 1722022 its reverse (2202271), we get a palindrome (3924293).

Subtracting 1722022 from its reverse (2202271), we obtain a square (480249 = 693²).

The spelling of 1722022 in words is "one million, seven hundred twenty-two thousand, twenty-two".