720012 has 24 divisors (see below), whose sum is σ = 1738800. Its totient is φ = 231616.

The previous prime is 720007. The next prime is 720019. The reversal of 720012 is 210027.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 720012.

It is not an unprimeable number, because it can be changed into a prime (720019) by changing a digit.

720012 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 687 + ... + 1382.

It is an arithmetic number, because the mean of its divisors is an integer number (72450).

2⁷²⁰⁰¹² is an apocalyptic number.

It is an amenable number.

720012 is an abundant number, since it is smaller than the sum of its proper divisors (1018788).

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

720012 is a wasteful number, since it uses less digits than its factorization.

720012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105 (or 2103 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 720012 is about 848.5352084622. The cubic root of 720012 is about 89.6285928622.

Adding to 720012 its reverse (210027), we get a palindrome (930039).

The spelling of 720012 in words is "seven hundred twenty thousand, twelve", and thus it is an iban number.