12782412 has 36 divisors (see below), whose sum is σ = 32541600. Its totient is φ = 4230432.

The previous prime is 12782377. The next prime is 12782431. The reversal of 12782412 is 21428721.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4173 + ... + 6555.

Almost surely, 2^12782412 is an apocalyptic number.

12782412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

12782412 is the 1788-th decagonal number.

It is an amenable number.

12782412 is an abundant number, since it is smaller than the sum of its proper divisors (19759188).

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

12782412 is a wasteful number, since it uses less digits than its factorization.

12782412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542 (or 2537 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 12782412 is about 3575.2499213342. The cubic root of 12782412 is about 233.8142290635.

The spelling of 12782412 in words is "twelve million, seven hundred eighty-two thousand, four hundred twelve".