12820350 has 24 divisors (see below), whose sum is σ = 31794840. Its totient is φ = 3418720.

The previous prime is 12820343. The next prime is 12820351. The reversal of 12820350 is 5302821.

It is a super-2 number, since 2×12820350² = 328722748245000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12820351) 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, 42585 + ... + 42884.

It is an arithmetic number, because the mean of its divisors is an integer number (1324785).

Almost surely, 2^12820350 is an apocalyptic number.

12820350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12820350 is an abundant number, since it is smaller than the sum of its proper divisors (18974490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12820350 is a wasteful number, since it uses less digits than its factorization.

12820350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85484 (or 85479 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12820350 is about 3580.5516334777. The cubic root of 12820350 is about 234.0453195881.

The spelling of 12820350 in words is "twelve million, eight hundred twenty thousand, three hundred fifty".