12782516 has 24 divisors (see below), whose sum is σ = 23856000. Its totient is φ = 5975424.

The previous prime is 12782513. The next prime is 12782599. The reversal of 12782516 is 61528721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12782513) 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, 4940 + ... + 7068.

It is an arithmetic number, because the mean of its divisors is an integer number (994000).

Almost surely, 2^12782516 is an apocalyptic number.

It is an amenable number.

12782516 is a deficient number, since it is larger than the sum of its proper divisors (11073484).

12782516 is a wasteful number, since it uses less digits than its factorization.

12782516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231 (or 2229 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 12782516 is about 3575.2644657424. The cubic root of 12782516 is about 233.8148631800.

The spelling of 12782516 in words is "twelve million, seven hundred eighty-two thousand, five hundred sixteen".