12820335 has 16 divisors (see below), whose sum is σ = 22377600. Its totient is φ = 6215840.

The previous prime is 12820303. The next prime is 12820337. The reversal of 12820335 is 53302821.

It is not a de Polignac number, because 12820335 - 2⁵ = 12820303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12820337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38685 + ... + 39014.

It is an arithmetic number, because the mean of its divisors is an integer number (1398600).

Almost surely, 2^12820335 is an apocalyptic number.

12820335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12820335 is a deficient number, since it is larger than the sum of its proper divisors (9557265).

12820335 is a wasteful number, since it uses less digits than its factorization.

12820335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77718.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 12820335 is about 3580.5495388278. The cubic root of 12820335 is about 234.0452283092.

The spelling of 12820335 in words is "twelve million, eight hundred twenty thousand, three hundred thirty-five".