12709720 has 16 divisors (see below), whose sum is σ = 28596960. Its totient is φ = 5083872.

The previous prime is 12709717. The next prime is 12709733. The reversal of 12709720 is 2790721.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 158832 + ... + 158911.

It is an arithmetic number, because the mean of its divisors is an integer number (1787310).

Almost surely, 2^12709720 is an apocalyptic number.

12709720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12709720 is an abundant number, since it is smaller than the sum of its proper divisors (15887240).

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

12709720 is a wasteful number, since it uses less digits than its factorization.

12709720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317754 (or 317750 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 12709720 is about 3565.0694242890. The cubic root of 12709720 is about 233.3701619872.

The spelling of 12709720 in words is "twelve million, seven hundred nine thousand, seven hundred twenty".