12819730 has 32 divisors (see below), whose sum is σ = 28771200. Its totient is φ = 3995520.

The previous prime is 12819707. The next prime is 12819739. The reversal of 12819730 is 3791821.

It is a junction number, because it is equal to n+sod(n) for n = 12819692 and 12819701.

It is not an unprimeable number, because it can be changed into a prime (12819739) 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 15 ways as a sum of consecutive naturals, for example, 7555 + ... + 9094.

It is an arithmetic number, because the mean of its divisors is an integer number (899100).

Almost surely, 2^12819730 is an apocalyptic number.

12819730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12819730 is an abundant number, since it is smaller than the sum of its proper divisors (15951470).

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

12819730 is a wasteful number, since it uses less digits than its factorization.

12819730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16674.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12819730 is about 3580.4650535929. The cubic root of 12819730 is about 234.0415466688.

It can be divided in two parts, 1281 and 9730, that added together give a palindrome (11011).

The spelling of 12819730 in words is "twelve million, eight hundred nineteen thousand, seven hundred thirty".