12783738 has 32 divisors (see below), whose sum is σ = 28163520. Its totient is φ = 3836160.

The previous prime is 12783737. The next prime is 12783761. The reversal of 12783738 is 83738721.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12783696 and 12783705.

It is not an unprimeable number, because it can be changed into a prime (12783731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6306 + ... + 8082.

It is an arithmetic number, because the mean of its divisors is an integer number (880110).

Almost surely, 2^12783738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12783738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14081760).

12783738 is an abundant number, since it is smaller than the sum of its proper divisors (15379782).

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

12783738 is a wasteful number, since it uses less digits than its factorization.

12783738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902.

The product of its digits is 56448, while the sum is 39.

The square root of 12783738 is about 3575.4353581068. The cubic root of 12783738 is about 233.8223137908.

The spelling of 12783738 in words is "twelve million, seven hundred eighty-three thousand, seven hundred thirty-eight".