12732120 has 64 divisors (see below), whose sum is σ = 42444000. Its totient is φ = 3394944.

The previous prime is 12732119. The next prime is 12732127. The reversal of 12732120 is 2123721.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12732093 and 12732102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12732127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4815 + ... + 6974.

Almost surely, 2^12732120 is an apocalyptic number.

12732120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12732120 is an abundant number, since it is smaller than the sum of its proper divisors (29711880).

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

12732120 is a wasteful number, since it uses less digits than its factorization.

12732120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11809 (or 11799 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12732120 is about 3568.2096350971. The cubic root of 12732120 is about 233.5071810981.

Adding to 12732120 its reverse (2123721), we get a palindrome (14855841).

The spelling of 12732120 in words is "twelve million, seven hundred thirty-two thousand, one hundred twenty".