12820299 has 8 divisors (see below), whose sum is σ = 17128512. Its totient is φ = 8529480.

The previous prime is 12820289. The next prime is 12820303. The reversal of 12820299 is 99202821.

It is a happy number.

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

It is not a de Polignac number, because 12820299 - 2⁸ = 12820043 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 2517 + ... + 5654.

It is an arithmetic number, because the mean of its divisors is an integer number (2141064).

Almost surely, 2^12820299 is an apocalyptic number.

12820299 is a deficient number, since it is larger than the sum of its proper divisors (4308213).

12820299 is an equidigital number, since it uses as much as digits as its factorization.

12820299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8697.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12820299 is about 3580.5445116630. The cubic root of 12820299 is about 234.0450092396.

The spelling of 12820299 in words is "twelve million, eight hundred twenty thousand, two hundred ninety-nine".