12684312 has 96 divisors (see below), whose sum is σ = 37374480. Its totient is φ = 3870720.

The previous prime is 12684307. The next prime is 12684323. The reversal of 12684312 is 21348621.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52512 + ... + 52752.

Almost surely, 2^12684312 is an apocalyptic number.

12684312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12684312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18687240).

12684312 is an abundant number, since it is smaller than the sum of its proper divisors (24690168).

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

12684312 is a wasteful number, since it uses less digits than its factorization.

12684312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 306 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 12684312 is about 3561.5041766085. The cubic root of 12684312 is about 233.2145481560.

It can be divided in two parts, 12684 and 312, that added together give a square (12996 = 114²).

The spelling of 12684312 in words is "twelve million, six hundred eighty-four thousand, three hundred twelve".