12703720 has 16 divisors (see below), whose sum is σ = 28583460. Its totient is φ = 5081472.

The previous prime is 12703699. The next prime is 12703739. The reversal of 12703720 is 2730721.

It can be written as a sum of positive squares in 2 ways, for example, as 12687844 + 15876 = 3562^2 + 126^2 .

It is a super-2 number, since 2×12703720² = 322769003676800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12703691 and 12703700.

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, 158757 + ... + 158836.

Almost surely, 2^12703720 is an apocalyptic number.

12703720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12703720 is an abundant number, since it is smaller than the sum of its proper divisors (15879740).

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

12703720 is a wasteful number, since it uses less digits than its factorization.

12703720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317604 (or 317600 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 12703720 is about 3564.2278266127. The cubic root of 12703720 is about 233.3334331065. Note that the first 3 decimals are identical.

The spelling of 12703720 in words is "twelve million, seven hundred three thousand, seven hundred twenty".