12838730 has 8 divisors (see below), whose sum is σ = 23109732. Its totient is φ = 5135488.

The previous prime is 12838691. The next prime is 12838733. The reversal of 12838730 is 3783821.

It can be written as a sum of positive squares in 2 ways, for example, as 12837889 + 841 = 3583^2 + 29^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12838733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641927 + ... + 641946.

Almost surely, 2^12838730 is an apocalyptic number.

12838730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12838730 is a deficient number, since it is larger than the sum of its proper divisors (10271002).

12838730 is a wasteful number, since it uses less digits than its factorization.

12838730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283880.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 12838730 is about 3583.1173578324. The cubic root of 12838730 is about 234.1571131783.

The spelling of 12838730 in words is "twelve million, eight hundred thirty-eight thousand, seven hundred thirty".