12820210 has 32 divisors (see below), whose sum is σ = 26317872. Its totient is φ = 4454400.

The previous prime is 12820201. The next prime is 12820211. The reversal of 12820210 is 1202821.

It can be written as a sum of positive squares in 8 ways, for example, as 9006001 + 3814209 = 3001^2 + 1953^2 .

It is not an unprimeable number, because it can be changed into a prime (12820211) 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, 691 + ... + 5110.

Almost surely, 2^12820210 is an apocalyptic number.

12820210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12820210 is an abundant number, since it is smaller than the sum of its proper divisors (13497662).

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

12820210 is a wasteful number, since it uses less digits than its factorization.

12820210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5838.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 12820210 is about 3580.5320833641. The cubic root of 12820210 is about 234.0444676492.

The spelling of 12820210 in words is "twelve million, eight hundred twenty thousand, two hundred ten".