12908820 has 48 divisors (see below), whose sum is σ = 36747648. Its totient is φ = 3384960.

The previous prime is 12908807. The next prime is 12908849. The reversal of 12908820 is 2880921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1897 + ... + 5423.

It is an arithmetic number, because the mean of its divisors is an integer number (765576).

Almost surely, 2^12908820 is an apocalyptic number.

12908820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12908820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18373824).

12908820 is an abundant number, since it is smaller than the sum of its proper divisors (23838828).

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

12908820 is a wasteful number, since it uses less digits than its factorization.

12908820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600 (or 3598 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 12908820 is about 3592.8846349417. The cubic root of 12908820 is about 234.5824485081.

The spelling of 12908820 in words is "twelve million, nine hundred eight thousand, eight hundred twenty".