12723819 has 16 divisors (see below), whose sum is σ = 17656320. Its totient is φ = 8143200.

The previous prime is 12723797. The next prime is 12723833. The reversal of 12723819 is 91832721.

It is not a de Polignac number, because 12723819 - 2⁹ = 12723307 is a prime.

It is a super-2 number, since 2×12723819² = 323791139889522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12723819.

It is not an unprimeable number, because it can be changed into a prime (12723889) 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, 8044 + ... + 9494.

It is an arithmetic number, because the mean of its divisors is an integer number (1103520).

Almost surely, 2^12723819 is an apocalyptic number.

12723819 is a deficient number, since it is larger than the sum of its proper divisors (4932501).

12723819 is a wasteful number, since it uses less digits than its factorization.

12723819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570.

The product of its digits is 6048, while the sum is 33.

The square root of 12723819 is about 3567.0462570592. The cubic root of 12723819 is about 233.4564232638.

The spelling of 12723819 in words is "twelve million, seven hundred twenty-three thousand, eight hundred nineteen".