12108432 has 40 divisors (see below), whose sum is σ = 35749696. Its totient is φ = 3459456.

The previous prime is 12108401. The next prime is 12108451. The reversal of 12108432 is 23480121.

It is a super-2 number, since 2×12108432² = 293228250997248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 12108399 and 12108408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17683 + ... + 18354.

Almost surely, 2^12108432 is an apocalyptic number.

12108432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12108432 is an abundant number, since it is smaller than the sum of its proper divisors (23641264).

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

12108432 is a wasteful number, since it uses less digits than its factorization.

12108432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36055 (or 36049 counting only the distinct ones).

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

The square root of 12108432 is about 3479.7172298910. The cubic root of 12108432 is about 229.6303577320.

Adding to 12108432 its reverse (23480121), we get a palindrome (35588553).

The spelling of 12108432 in words is "twelve million, one hundred eight thousand, four hundred thirty-two".