12306720 has 48 divisors (see below), whose sum is σ = 38767680. Its totient is φ = 3281664.

The previous prime is 12306719. The next prime is 12306727. The reversal of 12306720 is 2760321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (12306727) by changing a digit.

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, 12340 + ... + 13299.

It is an arithmetic number, because the mean of its divisors is an integer number (807660).

Almost surely, 2^12306720 is an apocalyptic number.

12306720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12306720 is an abundant number, since it is smaller than the sum of its proper divisors (26460960).

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

12306720 is a wasteful number, since it uses less digits than its factorization.

12306720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25657 (or 25649 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 12306720 is about 3508.0934993241. The cubic root of 12306720 is about 230.8770545702.

The spelling of 12306720 in words is "twelve million, three hundred six thousand, seven hundred twenty".