12432078 has 24 divisors (see below), whose sum is σ = 27027000. Its totient is φ = 4130064.

The previous prime is 12432071. The next prime is 12432089. The reversal of 12432078 is 87023421.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5293 + ... + 7271.

It is an arithmetic number, because the mean of its divisors is an integer number (1126125).

Almost surely, 2^12432078 is an apocalyptic number.

12432078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12432078 is an abundant number, since it is smaller than the sum of its proper divisors (14594922).

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

12432078 is a wasteful number, since it uses less digits than its factorization.

12432078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336 (or 2333 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 12432078 is about 3525.9152003416. The cubic root of 12432078 is about 231.6583233428.

Adding to 12432078 its reverse (87023421), we get a palindrome (99455499).

It can be divided in two parts, 1243 and 2078, that added together give a triangular number (3321 = T₈₁).

The spelling of 12432078 in words is "twelve million, four hundred thirty-two thousand, seventy-eight".