12820419 has 12 divisors (see below), whose sum is σ = 18692856. Its totient is φ = 8466432.

The previous prime is 12820373. The next prime is 12820427. The reversal of 12820419 is 91402821.

It is not a de Polignac number, because 12820419 - 2⁹ = 12819907 is a prime.

It is a super-2 number, since 2×12820419² = 328726286671122, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 12820392 and 12820401.

It is not an unprimeable number, because it can be changed into a prime (12820219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5694 + ... + 7619.

It is an arithmetic number, because the mean of its divisors is an integer number (1557738).

Almost surely, 2^12820419 is an apocalyptic number.

12820419 is a deficient number, since it is larger than the sum of its proper divisors (5872437).

12820419 is a wasteful number, since it uses less digits than its factorization.

12820419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13426 (or 13423 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12820419 is about 3580.5612688516. The cubic root of 12820419 is about 234.0457394700.

The spelling of 12820419 in words is "twelve million, eight hundred twenty thousand, four hundred nineteen".