1722252320 has 192 divisors, whose sum is σ = 4493633760. Its totient is φ = 621084672.

The previous prime is 1722252277. The next prime is 1722252361. The reversal of 1722252320 is 232522271.

It can be written as a sum of positive squares in 16 ways, for example, as 700555024 + 1021697296 = 26468^2 + 31964^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1722252320.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10969682 + ... + 10969838.

Almost surely, 2^1722252320 is an apocalyptic number.

1722252320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1722252320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2246816880).

1722252320 is an abundant number, since it is smaller than the sum of its proper divisors (2771381440).

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

1722252320 is a wasteful number, since it uses less digits than its factorization.

1722252320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 1722252320 is about 41500.0279517978. The cubic root of 1722252320 is about 1198.6680406357.

Adding to 1722252320 its reverse (232522271), we get a palindrome (1954774591).

The spelling of 1722252320 in words is "one billion, seven hundred twenty-two million, two hundred fifty-two thousand, three hundred twenty".