12684738 has 16 divisors (see below), whose sum is σ = 27675936. Its totient is φ = 3843840.

The previous prime is 12684731. The next prime is 12684773. The reversal of 12684738 is 83748621.

It is a junction number, because it is equal to n+sod(n) for n = 12684696 and 12684705.

It is not an unprimeable number, because it can be changed into a prime (12684731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96031 + ... + 96162.

It is an arithmetic number, because the mean of its divisors is an integer number (1729746).

Almost surely, 2^12684738 is an apocalyptic number.

12684738 is an abundant number, since it is smaller than the sum of its proper divisors (14991198).

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

12684738 is a wasteful number, since it uses less digits than its factorization.

12684738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192209.

The product of its digits is 64512, while the sum is 39.

The square root of 12684738 is about 3561.5639822977. The cubic root of 12684738 is about 233.2171589476.

It can be divided in two parts, 1268 and 4738, that added together give a palindrome (6006).

The spelling of 12684738 in words is "twelve million, six hundred eighty-four thousand, seven hundred thirty-eight".