12732730 has 16 divisors (see below), whose sum is σ = 23452704. Its totient is φ = 4974480.

The previous prime is 12732721. The next prime is 12732737. The reversal of 12732730 is 3723721.

It is a junction number, because it is equal to n+sod(n) for n = 12732695 and 12732704.

It is not an unprimeable number, because it can be changed into a prime (12732737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14376 + ... + 15235.

It is an arithmetic number, because the mean of its divisors is an integer number (1465794).

Almost surely, 2^12732730 is an apocalyptic number.

12732730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12732730 is a deficient number, since it is larger than the sum of its proper divisors (10719974).

12732730 is a wasteful number, since it uses less digits than its factorization.

12732730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29661.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 12732730 is about 3568.2951111140. The cubic root of 12732730 is about 233.5109101735.

Subtracting from 12732730 its reverse (3723721), we obtain a palindrome (9009009).

The spelling of 12732730 in words is "twelve million, seven hundred thirty-two thousand, seven hundred thirty".