1772723222 has 4 divisors (see below), whose sum is σ = 2659084836. Its totient is φ = 886361610.

The previous prime is 1772723221. The next prime is 1772723233. The reversal of 1772723222 is 2223272771.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2223272771 = 71 ⋅31313701.

It is a super-2 number, since 2×1772723222² = 6285095243636122568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1772723221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 443180804 + ... + 443180807.

It is an arithmetic number, because the mean of its divisors is an integer number (664771209).

Almost surely, 2^1772723222 is an apocalyptic number.

1772723222 is a deficient number, since it is larger than the sum of its proper divisors (886361614).

1772723222 is an equidigital number, since it uses as much as digits as its factorization.

1772723222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886361613.

The product of its digits is 32928, while the sum is 35.

The square root of 1772723222 is about 42103.7198119121. The cubic root of 1772723222 is about 1210.2645465784.

Adding to 1772723222 its reverse (2223272771), we get a palindrome (3995995993).

The spelling of 1772723222 in words is "one billion, seven hundred seventy-two million, seven hundred twenty-three thousand, two hundred twenty-two".