12985726 has 16 divisors (see below), whose sum is σ = 21105504. Its totient is φ = 5956704.

The previous prime is 12985717. The next prime is 12985727. The reversal of 12985726 is 62758921.

12985726 = 474² + 475² + ... + 525².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12985727) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3055 + ... + 5941.

It is an arithmetic number, because the mean of its divisors is an integer number (1319094).

Almost surely, 2^12985726 is an apocalyptic number.

12985726 is a deficient number, since it is larger than the sum of its proper divisors (8119778).

12985726 is a wasteful number, since it uses less digits than its factorization.

12985726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075.

The product of its digits is 60480, while the sum is 40.

The square root of 12985726 is about 3603.5712841569. The cubic root of 12985726 is about 235.0473784057.

The spelling of 12985726 in words is "twelve million, nine hundred eighty-five thousand, seven hundred twenty-six".