12810432 has 28 divisors (see below), whose sum is σ = 33894776. Its totient is φ = 4270080.

The previous prime is 12810407. The next prime is 12810433. The reversal of 12810432 is 23401821.

It is a junction number, because it is equal to n+sod(n) for n = 12810399 and 12810408.

It is not an unprimeable number, because it can be changed into a prime (12810433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33169 + ... + 33552.

Almost surely, 2^12810432 is an apocalyptic number.

12810432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12810432 is an abundant number, since it is smaller than the sum of its proper divisors (21084344).

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

12810432 is an equidigital number, since it uses as much as digits as its factorization.

12810432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66736 (or 66726 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 12810432 is about 3579.1663833915. The cubic root of 12810432 is about 233.9849504530.

The spelling of 12810432 in words is "twelve million, eight hundred ten thousand, four hundred thirty-two".