1720800000 has 324 divisors, whose sum is σ = 6227413920. Its totient is φ = 456960000.

The previous prime is 1720799989. The next prime is 1720800013. The reversal of 1720800000 is 80271.

It is a super-2 number, since 2×1720800000² = 5922305280000000000, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7199881 + ... + 7200119.

Almost surely, 2^1720800000 is an apocalyptic number.

1720800000 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 1720800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3113706960).

1720800000 is an abundant number, since it is smaller than the sum of its proper divisors (4506613920).

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

1720800000 is an frugal number, since it uses more digits than its factorization.

1720800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 1720800000 is about 41482.5264418647. The cubic root of 1720800000 is about 1198.3310131452.

Adding to 1720800000 its reverse (80271), we get a palindrome (1720880271).

The spelling of 1720800000 in words is "one billion, seven hundred twenty million, eight hundred thousand".