1206720000 has 300 divisors, whose sum is σ = 4362337980. Its totient is φ = 321024000.

The previous prime is 1206719951. The next prime is 1206720019. The reversal of 1206720000 is 276021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (300).

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 (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2879791 + ... + 2880209.

Almost surely, 2^1206720000 is an apocalyptic number.

1206720000 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 1206720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2181168990).

1206720000 is an abundant number, since it is smaller than the sum of its proper divisors (3155617980).

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

1206720000 is an frugal number, since it uses more digits than its factorization.

1206720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1206720000 is about 34737.8755827123. The cubic root of 1206720000 is about 1064.6385072139.

Adding to 1206720000 its reverse (276021), we get a palindrome (1206996021).

The spelling of 1206720000 in words is "one billion, two hundred six million, seven hundred twenty thousand".