12849220 has 24 divisors (see below), whose sum is σ = 27254808. Its totient is φ = 5088000.

The previous prime is 12849191. The next prime is 12849227. The reversal of 12849220 is 2294821.

It can be written as a sum of positive squares in 4 ways, for example, as 2762244 + 10086976 = 1662^2 + 3176^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12849227) 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, 1161 + ... + 5200.

It is an arithmetic number, because the mean of its divisors is an integer number (1135617).

Almost surely, 2^12849220 is an apocalyptic number.

12849220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12849220 is an abundant number, since it is smaller than the sum of its proper divisors (14405588).

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

12849220 is a wasteful number, since it uses less digits than its factorization.

12849220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471 (or 6469 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12849220 is about 3584.5808681072. The cubic root of 12849220 is about 234.2208692102.

The spelling of 12849220 in words is "twelve million, eight hundred forty-nine thousand, two hundred twenty".