12765432 has 32 divisors (see below), whose sum is σ = 32694480. Its totient is φ = 4151040.

The previous prime is 12765427. The next prime is 12765433. The reversal of 12765432 is 23456721.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12765432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12765433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5503 + ... + 7470.

Almost surely, 2^12765432 is an apocalyptic number.

12765432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12765432 is an abundant number, since it is smaller than the sum of its proper divisors (19929048).

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

12765432 is a wasteful number, since it uses less digits than its factorization.

12765432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13023 (or 13019 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 12765432 is about 3572.8744730259. The cubic root of 12765432 is about 233.7106511972.

The spelling of 12765432 in words is "twelve million, seven hundred sixty-five thousand, four hundred thirty-two".