12782428 has 12 divisors (see below), whose sum is σ = 22736392. Its totient is φ = 6286320.

The previous prime is 12782377. The next prime is 12782431. The reversal of 12782428 is 82428721.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12782393 and 12782402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25950 + ... + 26437.

Almost surely, 2^12782428 is an apocalyptic number.

It is an amenable number.

12782428 is a deficient number, since it is larger than the sum of its proper divisors (9953964).

12782428 is a wasteful number, since it uses less digits than its factorization.

12782428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52452 (or 52450 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 12782428 is about 3575.2521589393. The cubic root of 12782428 is about 233.8143266201.

The spelling of 12782428 in words is "twelve million, seven hundred eighty-two thousand, four hundred twenty-eight".